Jason Voorhees, known for his appearances in the cult-classic horror film series Friday the 13th, is a playable guest character in Mortal Kombat X.

Jason made his debut as the first character available through DLC as part of the Kombat Pack.

About Jason Voorhees

Jason Voorhees was born June 13th, 1946 on a Friday to Pamela and Elias Voorhees. Elias's backstory is explained heavily in the comic series, however he is never spoken of in film with the exception of a brief mention in the ninth film Jason Goes to Hell. Jason was born with facial disfigurements and possibly was mentally handicapped. As a young boy, he was neglected by the camp counselors, who engaged in sexual intercourse instead of watching over Jason, resulting in his death by drowning in Crystal Lake. As retaliation, his mother went on a murderous rampage, killing as many counselors as she could over the loss and grief of her son. When Pamela was killed to end her nightmarish onslaught, Jason returned to continue his mother's work and kills anyone who dares step foot in Camp Crystal Lake.

Jason serves as the primary antagonist of the Friday the 13th series. Jason does not appear in the original film until the ending, where his mother served as the main antagonist. From the second film onward, Jason serves as the antagonistic force for the protagonists in each film. He serves as a secondary antagonist in the crossover film Freddy vs Jason.

Jason's most icon feature is his hockey mask. He first obtains the mask in the third film and it remains a key feature for the remainder of his appearances. Born with facial deformities and possible retardation, his appearance stays consistent as an older man with these deformities but later gains an undead appearance after resurrecting in the sixth film, Jason Lives. He returns to his more human-like appearance in the 2009 remake. Despite these differences in appearances, his Immortality is always present regardless of depictions, being shot, stabbed, having drowned and even blown up, all resulting in Jason returning to kill again. The tenth film, Jason X, reveals that Jason has a regenerative healing factor, however this concept is never mentioned in any other film nor is it ever used again.

Jason's preferred weapon of choice is his machete, the same weapon his beloved mother used to enact her revenge on the camp counselors. Despite this, Jason is known to use just about anything within reach to kill his victims, even using just his bare hands with gruesome effect. His superhuman strength coupled with his undead nature make him a relentless, brutal killing machine.

Jason has battled fellow horror slasher icon Freddy Krueger in the 2003 film Freddy vs Jason, of which ended in a stalemate after Jason emerges from Crystal Lake with Freddy's decapitated head but Freddy looks and winks at the camera and laughs. He has also battled Freddy in the comics along with Michael Myers from the Halloween franchise, Ash from the Evil Dead franchise, and Leatherface from the Texas Chainsaw Massacre franchise. Of the characters he's fought, Freddy is the only one Jason has had a film crossover with and Leatherface is the only one Jason has been able to fight against in a video game appearance. Jason has yet to encounter these other characters in film.

Appearance

Jason's appearance takes inspiration from his origin franchise. His variations add little to no extra cosmetic change with the exception of a chain around his neck that is taken from the seventh film New Blood and a darker version of his iconic hockey mask which is not seen in any film.

Jason's primary appearance takes inspiration from his appearances in both Freddy vs Jason and the 2009 reboot of a rugged attire with a damaged olive colored jacket with a grey shirt underneath with black pants that are slightly torn with boots. His mask takes on an appearance similar to his Freddy vs Jason mask, including a giant scar across the left cheek and eye hole of the mask.

Jason's alternate appearance is slightly different from his primary appearance. His attire features a now dark blue jacket with a black and white shirt underneath with the same damaged appearance as the jacket from his primary appearance. His pants now appear light grey in color and are covered in blood. A noticeable difference is his mask which takes inspiration directly from fifth film A New Beginning, featuring a lighter color and blue triangle markings instead of the normal red markings.

In Mortal Kombat Mobile, Jason's Nightmare Card received an exclusive reskin that did not appear in Mortal Kombat X. His jacket is now a lighter color of blue and is heavily stained with blood all over. His pants are identical to his alternate appearance with the same blood stains however the color is a darker grey. The card also combines aspects of the appearances of his Unstoppable and Relentless variations, respectively, giving Jason the darker version of his mask from the Relentless however this version lacks the triangle markings and gives him the chain from the Unstoppable variation is secured around his neck.

Jason cannot be unmasked, even during Fatalities that cause his face to fall off, the mask remains on. Through hacking, it is possible to view Jason without his mask on which reveals that, unlike in his origin franchise, Jason's face is not deformed, as he appears to be a middle aged man with scarring on parts of his face. With the exception of Goro, the Predator, and Tremor, Jason is prominently taller than the other Mortal Kombat X characters.

Biography

  • Mortal Kombat X: Death and revenge make up the very core of Jason Voorhees' being. He died as a young boy. His mother killed out of grief and rage. When she was murdered, Jason returned and avenged her. Many times since, the living have tried to send him back to the realm of the dead. He's been stabbed, drowned, electrocuted, hurled into space. But Jason cannot be killed. Cannot be stopped.

Combat Characteristics

Powers and Abilities

Jason is an undead, ruthless killing machine and possesses immense strength. His undead nature renders him completely implacable and nearly unstoppable, being virtually immortal. Even more so, his brute strength allows him to toss his opponents effortlessly and deliver powerful blows with his fists and machete.

Signature Moves

  • Killing Machine: Jason raises is arms and a gold aura surrounds his upper body, granting him armor for a short duration. While active, Jason is unaffected by any attack, combo, special attack, and interactable, with the exception of X-Ray attacks, parries and attacks that grant armor breaking properties. Additionally, Jason is immune to chip damage, however his ability to jump is disabled and Jason will still take damage from attacks. When this effect ends, Jason momentarily falls asleep, leaving him open for attacks. If Jason successfully lands his X-Ray, the effect can end prematurely, but Jason won't fall asleep. While Pursuit is active, it can end the effect prematurely should it be used during Pursuit. The opposite can also occur, if Jason falls asleep from Killing Machine, it can end Pursuit's effect prematurely as well. (MKX)
  • Temple Punch: Jason charges towards his opponent with a high fist and punches them away. This attack can hit opponents at full-screen distance. This attack can miss ducking opponents. (MKX)
    • The enhanced version is called Temple Slam and has armor. Jason lifts the opponent while they are still on the ground and punches them with a second punch, which knocks them away for increased damage in addition to the starting strike. The attack also has an increased chance to hit the opponent, however its hitbox remains the same as the original.
  • Choke: Jason lunges forward and snatches the opponent by the throat with one hand and viciously throttles them before flinging them across the arena. This attack is capable of grabbing opponents out of the air, whether this being from a combo or the opponent jumping at Jason. (MKX)
    • The enhanced version is called Choke Slam, which has armor and has squeeze and choke the opponent with much more force until Jason snaps the opponent's neck while holding them up before tossing them away, dealing increased damage.
  • Back Breaker: Jason quickly grabs his opponent and slams them over his knee, breaking their back before tossing them in the opposite direction. Despite being a Throw ability, the attack can miss ducking opponents. (MKX)
    • The enhanced version is called Spine Shatter, which has armor and has Jason slam the opponent over his knee a second time for increased damage. When enhanced, the attack will connect on standing opponents during a combo.
  • Tight Squeeze: Jason reaches forward and pulls his opponent into a crushing bear hug, snapping their back before throwing them in the opposite direction. This attacks takes longer to make contact with the opponent than Back Breaker, but unlike the latter, it cannot miss ducking opponents. (MKX)
    • The enhanced version is called Crippler and has armor. Additionally, after squeezing the opponent and breaking their back, Jason grabs their face with one hand and snaps the opponent’s neck before tossing them away, dealing increased damage. The enhanced version also gives Jason the option to throw them forwards instead of in the opposite direction. When enhanced, the attack will connect on standing opponents during a combo.
  • Corpse Grab: Jason snatches an airborne opponent out of the air and slams them into the floor. (MKX)
    • The enhanced version is called Corpse Slam and has Jason slam the opponent on the ground with much more impact, dealing increased damage.
  • Bloodshed: Jason grabs and lifts the opponent by the neck and impales them with his machete twice before kicking them to the ground. Unlike Choke, this attack can miss ducking opponents and Jason does not lunge forward, rather he stands in place when trying to grab the opponent. However, similar to Choke, the attack is capable of grabbing opponents out of the air, whether this being from a combo or the opponent jumping at Jason and Jason is much less negative if this attack is blocked by the opponent as compared to Choke. This replaces Choke for the Slasher Variation. (MKX - Slasher Variation)
    • The enhanced version is called Bloodlust, which has armor and has Jason push the machete even deeper into the opponent's abdomen two additional times before kicking them away, dealing increased damage.
  • Machete Toss: Jason throws his machete at the opponent by cocking it behind him with both arms then throwing it forward overhead. This projectile has an increased hitbox compared to most projectiles, allowing it to hit ducking opponents. (MKX - Slasher Variation)
    • The enhanced version Machete Throw has armor and deals increased damage. Jason is much less negative when this version of the attack is blocked by the opponent. When used in the corner of an arena and utilized with juggle effects, Jason is capable of continuing combos, however this window is extremely small.
  • Shoulder Push: Jason shoulder charges his opponent, knocking them to the ground. Unlike Temple Punch, this attack will not reach full-screen distance. However, it produces much more knockback compared to Temple Punch when blocked but can still miss ducking opponents. When used in the corner of an arena and utilized with juggle effects, Jason is capable of continuing combos. This replaces Temple Punch for the Slasher Variation. (MKX - Slasher Variation)
    • The enhanced version is called Shoulder Charge, which has armor, increased damage and knocks the enemy away for a farther distance. Jason also recovers faster from knocking the opponent away. The attack’s hitbox remains the same. When used in the corner of an arena and utilized with juggle effects, Jason is capable of continuing combos, however this effect is slightly increased due to the faster recovery of the attack.
  • Psycho Slash: Jason slashes his opponent three times with his machete, with the final slash knocking them to the ground. (MKX - Slasher Variation)
    • The enhanced version Hack 'n' Slash has armor and has Jason slash the opponent three more times, with the final slash lodging the machete into the opponent's shoulder - to the point it is stuck - only for Jason to kick the opponent to separate the machete and the opponent, dealing double the original damage. Additionally, the attack less negative when blocked by the opponent.
  • Lake Mist: Jason walks backwards and disappears in a thick gray mist cloud and reappears behind his opponent from any spot in the arena. Jason is vulnerable when walking into the mist and should he be attacked before he teleports, he will not appear behind the opponent. Jason is also vulnerable when reappearing. (MKX - Relentless Variation)
    • The enhanced version Blood Mist, which armors Jason while he disappears and has Jason recover from disappearing much quicker. Jason is still vulnerable when appearing behind his opponent.
  • Pursuit: Jason cracks his neck, causing the screen to glow red and points at his opponent. During this time, the opponent's run and dash abilities are disabled, and their controls are reversed with the exception of the their ability to block, their Throw and X-Ray attacks and the use of interactables. The effect disappears instantly if Jason is hit. This effect can end prematurely from Killing Machine (See Above). The effect can also end prematurely if Jason successfully connects his X-Ray. Jason is completely vulnerable while he points at the opponent. (MKX - Relentless Variation)
    • The enhanced version is called Dark Pursuit and has Jason only crack his neck to recover from the ability much faster. The difference in recovery is that Jason can attack without having to point at his enemy, however if Jason does not attack or move, he will perform the action like the original.
  • Damned: Jason's overall damage increases based on how close he is to death. (MKX - Relentless Variation)
    • This is a passive bonus and does not require activation, similar to Johnny Cage's Red Shadow Mode.
      • This passive takes effect once Jason is below 50% health and increases the lower his health is:
        • Below 50% - 10% increase in damage.
        • Below 25% - 25% increase in damage.
        • Below 10% - 45% increase in damage.
        • Below 5% - 75% increase in damage.
  • Punishment: Jason clutches his fist near his chest, gaining a temporary damage buff, which also causes the chain around his neck to glow green. While active, all of Jason's damage dealt is increased by 33%, all of his attacks will break all forms armor, including the armor granted by X-Ray attacks. However, the attack does not affect Tremor’s Krystallization buff. Connecting or being struck by an X-Ray attack ends this effect prematurely, however Jason’s X-Ray receives the damage increase for the entirety of the attack. (MKX - Unstoppable Variation)
    • The enhanced version is called Rampant, which has Jason recover from the attack faster, increases the damage bonus to 50%, increases the duration of the buff, causes the chain around his neck to glow even brighter and retains the same armor breaking properties.
  • Rise: Jason clutches his fist near his chest, causing his hockey mask glows white from the inside and gains a temporary heal-over-time buff. Additionally, Jason passively generates Super Meter while the effect is active, generating Super Meter without the need of special attacks, getting attack or dealing chip damage, however he can still generate Super Meter this way even if the effect is active. Jason recovers 5% of his health for the entirely of the special attack. Connecting or being struck by an X-Ray attack ends this effect prematurely. This replaces Killing Machine for the Unstoppable Variation. (MKX - Unstoppable Variation)
    • The enhanced version, Corpse Walk, has Jason recover from the ability faster and heals him for 10% health over a longer period, however the ability no longer passively generates Super Meter, at the expense of the recovery and increase in health returned.
  • Resurrection: When Jason's life bar completely drains, lightning strikes him and he returns from the dead, regaining a portion of health based on how full his Super Meter is. However, Jason can cancel his Resurrection, allowing him to keep his Super Meter, thus, ending the round. If it is what would be the final round of the match, Jason will be forced to resurrect. Jason can resurrect a total of three times a match. (MKX - Unstoppable Variation)
    • Resurrection Knockback: When Jason's health reaches 0, whether he chooses to resurrect or not, an explosion of energy comes from Jason that separates himself and his opponent.

X-Ray

  • The Horror: Jason walks slowly forward with his hand outstretched, seizing the opponent by the neck. He then plunges the blade of his machete up through the opponent's chin and skull, then forces the handle up, snapping their neck backward. He rips the machete out and stabs the opponent in the abdomen, breaking their spine and several ribs. He retracts the blade after, causing the opponent to fall to the ground. When Jason's hand is outstretched, the attack is capable of grabbing opponents out of the air, whether this being from a combo or the opponent jumping at Jason. When Jason initially starts the attack, it can hit ducking opponents, however once he starts walking, there is a chance it can miss ducking opponents, even if they are blocking. (MKX)

Other Moves

  • Throw: Jason lifts his opponent by the collar, plunges his hand into their stomach and crushes their innards before punching them to the ground. (MKX)
  • Throw (Machete): Jason slashes the opponent across the stomach, making them fall to their knees. After a brief pause, he plunges his machete into their head, then kicks them in the face, knocking them away. (MKX - Slasher Variation)
  • Awakens: Jason charges forward with a series of punches with the final punch launching the opponent in the air for a juggle. This combo can reach the opponent full-screen distance. (MKX)
  • Skull Slam: Jason performs a bell clap to the opponent's head, leaving them momentarily dazed. If it connects successfully it will leave the opponent stunned for a brief moment for a free hit. This attack is unavailable in the Slasher Variation. Using this attack twice on a standing opponent will end the current combo unless a special attack is used unless Skull Slam is used on an airborne opponent. Jason can follow-up with an additional attack if this is successful: (MKX)
    • Camp Killer: Jason lifts the opponent up, holds them high in the air and then slams them onto the ground in the opposite direction head first. This attack will not connect if two Skull Slams are performed consecutively. Like Skull Slam, this follow-up attack is not available in the Slasher Variation.
  • Knee Strike: Jason strikes his opponent with a quick knee. Jason can perform several follow-up attacks afterwards: (MKX)
    • Haunting: Jason delivers a powerful overhead punch that knocks his opponent to the ground.
    • In The Shadows: Jason delivers a powerful uppercut, knocking the opponent in the air effortlessly, allowing for a juggle.
    • Final Friday: Jason grabs his opponent by the throat with both hands, throttling them violently before throwing them across the stage, full screen, in the opposite direction. This combo acts as a throw and is unblockable however it can miss ducking opponents. This combo is unavailable in the Slasher variation.
  • Machete: While in the Slasher Variation, Jason gains unique combos utilizing his machete. Additionally, some of his basic attacks and combos will be altered from their original to incorporate his machete, including gaining a new Throw (See Above). (MKX - Slasher Variation)

Mobile Game Moves

  • Undying Will: When Jason loses all his health, lighting strikes him and he Resurrects, returning a small portion of his health, gaining Strength which increases all his damage dealt and a bar of Power. The Strength bonus lasts until Jason is defeated. (MK Mobile - Unstoppable Card - Passive)
  • Eternal Slayer: When Jason loses all his health, lighting strikes him and he Resurrects, returning a small portion of his health, gaining Strength which increases all his damage dealt and a bar of Power. Jason can Resurrect twice, and his Strength damage bonus increases and stacks with each resurrection. The Strength bonus lasts until Jason is defeated. (MK Mobile - Slasher Card - Passive)
  • Unyielding Pursuit: Jason has a 50% chance to evade any and all special attacks with the exception of X-Ray attacks or Fatal Blows. If he does, his mask will glow, he will teleport behind his opponent and Stun them by stabbing them with his machete, setting for a free hit. Nightmare teammates have a 30% chance of unblockable Special 2 attacks. (MK Mobile - Nightmare Card - Passive)
  • Runaway: Jason clutches his fists, gaining Strength, increasing all damage dealt for some time, then performs a series of punches and kicks that knock the opponent down. (MK Mobile - Unstoppable Card)
  • Awakens: Jason performs a bell clap then a series of quick punches that knock the opponent away. Afterwards, he raises his hands, gaining Regeneration, granting him a heal-over-time buff. (MK Mobile - Unstoppable Card)
  • Hack 'n' Slack: Jason slashes his opponent repeatedly with his machete until it gets stuck in their shoulder and he kicks them away to separate them from the blade. The opponent is affected by a Bleed damage-over-time effect. The second half of this attack is unblockable. (MK Mobile - Slasher Card)
  • Bloodlust: Jason knees his opponent then grabs them and stabs them with his machete, digging it deep into their chest before kicking them them away. The opponent is affected by a Bleed damage-over-time effect. When Jason grabs the opponent, the attack becomes unblockable. (MK Mobile - Slasher Card)
  • Pursuit: Jason cracks his neck, causing the screen to turn red and gains Luck, increasing the Critical Chance of all his attacks with the exception of his X-Ray attack. He then kicks the opponent then does a charging fist, knocking them down. (MK Mobile - Nightmare Card)
  • Heavy Payback: Jason removes the combat knife from his neck and proceeds to stab and slice the opponent once each. He then delivers a knee strike before stabbing them in the stomach, causing a Bleed damage-over-time effect. (MK Mobile - Nightmare Card)
    • When the move is performed twice, Jason will throw the combat knife away, and the move will be altered.
      • Jason will now punch his opponent twice followed by an overhead double fist that knocks them to the ground. He will then stomp on their head with his boot to end the combo. When altered, the attack no longer causes a Bleed effect.

Fatalities

  • Kill for Mother: Jason brings out his machete. The opponent looks up in terror, then Jason slashes the opponent to bisect their body diagonally. After three strikes, the upper body is completely severed and falls off as the opponent screams. (MKX)
  • Sleeping Bag Killer: Jason grabs his opponent's leg and smashes his opponent once, causing one arm to rip off as the body is dragged back. Then he smashes them down again, causing their other arm to fall off while Jason drags the opponent's body across the floor again. He then smashes them one final time, completely dismembering the opponent, with only one of their legs remaining in his hand. He looks at the leg, then throws it with the rest of the body. (MKX)

Brutalities

  • Blunt Trauma: Jason performs either a Temple Slam or a Shoulder Charge that decapitates the opponent with the force of either his fist or shoulder, sending their head flying backwards from their body offscreen or into the arena’s corner wall. (MKX)
    • Can not be performed on a juggled or airborne opponent.
  • Go to Hell: Jason performs his X-Ray, only this time when he removes his machete, he decapitated the opponent with a single slice instead of stabbing them in the stomach. (MKX)
    • Jason must walk a number of steps from the X-Ray itself.
    • There is a chance that this requirement can be ignored and the Brutality will initiate (See Errors).
  • Blood Bath: Jason performs a Bloodlust, only this time instead of kicking the opponent away, Jason brutally slices the opponent's upper body vertically in half from the waist up with his machete by twisting the blade and pulling it upwards after digging it into the opponent's chest. (MKX - Slasher Variation)
    • A button must be held.
  • Head Spin: While Pursuit or Dark Pursuit is active, Jason performs a Crippler, only this time, he twists the opponent's head completely around instead of snapping their neck. (MKX - Relentless Variation)
    • Pursuit or Dark Pursuit must be active.
    • Either effect ends prematurely when the Brutality is successfully performed, even before the actual head spin.
  • Spinal Tap: After a Resurrection, Jason performs a Back Breaker, adding a second slam with enough force to split his opponent in half at the waist over his knee. (MKX - Humiliation - Unstoppable Variation)
    • Can only be performed on the round Jason resurrects.
    • The Resurrection must be on what would be the final round of the match.
    • A button combination is required to have Jason turn and look away from his opponent to perform the Humiliation version.
  • Secret Throw Brutality: Jason performs his Throw, only this time, he chops the opponent's head clean in half with his machete when he plants it in their head. (MKXL - Slasher Variation - Secret)
    • A button must be held.

Ending

  • Mortal Kombat X: "Like Scorpion, Jason Voorhees was a revenant: a vengeful spirit returned to life. Hundreds had fallen victim to his bloodlust. Liu Kang, now ruler of the Netherrealm, took notice. An immortal killer like Jason would be useful in his plan for konquest. He drew Jason into the Netherrealm and offered him an endless bounty of slaughter... in return for his allegiance. Jason's simple reply was to destroy Liu Kang."

Trivia

General

  • Jason is the second slasher film villain guest character to appear in the Mortal Kombat series, the first being Freddy Krueger and the third being Leatherface.
    • Overall, he is the second horror movie guest character featured in the series, the first being Freddy Krueger, the third being the Predator, the fourth being Leatherface and the fifth being the Alien.
      • The Predator and Alien are the first and second science-fiction horror movie guest characters, while the latter are from the traditional slasher horror genre.
    • Freddy, Jason, and Leatherface are all playable in the mobile version of Mortal Kombat with the release of the 2018 Halloween Update.
  • Jason is the second guest character in the series to be undead. The first was Freddy Krueger, and Spawn being the third.
  • Jason is the first of three characters in the Mortal Kombat series with the ability to resurrect once defeated. The second and third were Geras and D'Vorah, respectively.
    • Jason's ability to resurrect could have also inspired the Character Trait of Hellboy, a guest character featured in NetherRealm Studios' DC fighting game Injustice 2 who's resurrection traits are nearly identical to Jason's.
  • Jason's official announcement teaser trailer was released on a Friday the 13th (March of 2015), matching the title of his origin franchise.
    • Whenever the date of a month happens to fall on Friday the 13th, in the mobile version of Mortal Kombat, Jason's playable cards will be available for players, in addition to celebrating the day of the franchise's title.
  • Jason's Fatality Sleeping Bag Killer references the movie Friday the 13th Part VII: The New Blood, in which Jason kills Judy by repeatedly smashing her against a tree while she was in a sleeping bag. In MKX, however, he doesn't put his victim in a sleeping bag and slams them against the ground instead.
  • In the Friday the 13th films, unlike in Mortal Kombat X, unless one counts the Slasher Variation, Jason rarely uses his fists, instead preferring to use his machete or whatever else happens to be handy. On rare occasions does Jason use his bare hands, but this is used to great effect.
  • The chain around Jason's neck in his Unstoppable Variation is a reference to Friday the 13th Part VII: The New Blood. The lightning-induced resurrection is a reference to a scene from Friday the 13th Part VI: Jason Lives.
  • The name of Jason's Final Friday attack is a reference to the tagline for Jason Goes to Hell, the ninth film in the Friday the 13th series which was originally planned to be the final film in the franchise.
  • In the Friday the 13th movies, Jason had a misshapen skull, rotting teeth and one of his eyes was lower than the other, but in Mortal Kombat X, every X-Ray shows Jason having a regularly shaped human skull, and a recent hack for the PC version removes Jason's mask and reveals his face, which merely has several scars on an otherwise middle-aged man.
    • While Jason never shows emotion in the movies when he is stabbed, shot, set on fire, etc., removing his mask using this hack and performing a fatality on him will show him in agonizing pain, though this is more than likely just a gameplay mechanic as almost all characters have the same reaction to the same fatalities.
      • Additionally, Jason and Leatherface share the same face when unmasked using this hack, although there are minor differences; the placement of scars, withered skin and Leatherface has a missing nose and rotten teeth.
        • Additionally, Jason never makes any noises when being attacked in the movies. However, during certain fatalities, Jason will let out a moan before falling over dead. This is more easily heard during Goro's Peek-A-Boo fatality, when Goro presses Jason's head into his chest, there is a loud moan from inside. This again is more than likely just a game mechanic as all male characters make the same exact noise.
          • However, he will make no noise when the Kove Stage Fatality is done on him.
  • Jason's default appearance is heavily based off his appearances in Freddy vs. Jason and the 2009 reboot, replicating his attire from the two films. His alternate color is based on Roy Burns' appearance in Friday the 13th: A New Beginning, down to the black clothing and blue hockey mask chevrons.

Mortal Kombat X

  • Jason is the only guest character that does not kill Shinnok in his arcade ending.
    • Interestingly, although he and his fellow guest characters are not canon to the series, Jason's ending is surprisingly more canon-like than the other guest characters; it even acknowledges Liu Kang as the new ruler of the Netherrealm, established in the ending of the Story Mode.
  • As with Freddy Krueger before him, when selected, the announcer will say Jason's name in full, saying Jason Voorhees. When Jason wins a match, however, only his first name will be said.
  • Jason is one of the few characters to have a Brutality that derives from his X-Ray, and not only from special moves, throws, or combos. The other characters are Sonya, Erron Black, Jacqui Briggs, the Predator, Tremor, Leatherface, and Triborg.
    • He's also one of the few characters who can interrupt his X-Ray to perform a different move, since the characteristic decapitation from his brutality replaces the final hit of his X-Ray. The other characters are Jacqui, Tremor, Triborg, Leatherface, and the Predator.
  • All fights that pit Jason against Reptile, the Predator, Triborg or Alien will cause the blood from the victim that Jason drags in his intro has the same blood as whoever he's fighting. This is also true for the intro where he removes the combat knife from his neck as the blood around the wound will have the same color blood as his enemy. Why this occurs in unknown.
  • Jason is one of two characters to receive armor for a teleport ability. The other is Kenshi in his Possessed variation.
    • He also receives the most armor in the game for his teleport, a total of 3 hits, which is the most for any ability.
  • Jason is the second tallest character in MKX to originate from Earthrealm, the tallest being Tremor, and the fifth tallest character in the game next to Goro, the Predator, Torr, and Tremor.
  • Jason is the only character in the game to have specific music play during both of his Fatalities.
  • Jason is one of three characters in MKX with two basic throws, the others being Johnny Cage and Ferra/Torr.
    • All three have unique traits in order to perform their different throws;
      • Jason - Changes based on his variation, as he uses his machete for the Slasher Variation.
      • Torr - Similar to Jason, based on variation selected and but also if Ferra is not on his back.
      • Johnny - Can perform in any variation when Red Shadow Mode is active or in the Fisticuffs variation with Fist Bump active.
  • Jason was addressed by full name only by Shinnok, but with the release of Mortal Kombat XL, Bo' Rai Cho will also address Jason by his full name. The only other characters that seem to know who Jason is are Raiden, Liu Kang, Goro, and Triborg.
    • Goro and Liu Kang both say "You..." and "YOU!", respectively. Goro's reasoning may just be a coincidence while Liu Kang is more on the line from Jason's Arcade Ending.
    • Raiden will say "Misguided one" referring to Jason as a serial killer and "Back to Hell with you!", showing he knows Jason's undead nature.
    • Triborg will refer to Jason as "Mental defective" referencing Jason being born with birth defects as a child.
  • Jason is one of two characters in MKX who has a throw in a combo rather than a special move. The second is Bo' Rai Cho, who has two.
  • Interestingly, when Jason performs his X-Ray Brutality while in his Relentless variation, he will assume the Victory Pose of his Slasher Variation since he uses his machete to kill his opponent.
    • Another interesting thing is with his Slasher Variation and his throw Brutality; he assumes the victory pose of his other Variations instead since the machete is in the opponent's head.
  • When Jason performs his Spinal Tap Brutality, he will perform the enhanced version of his Back Breaker on his opponent while not having to actually use the enhanced version to finish the opponent. This makes Jason one of three characters to perform an enhanced special during a Brutality without actually using said enhanced special. The other two are the Alien and Goro.
    • Ironically, when Jason performs his Blunt Trauma Brutality, while not in his Slasher Variation, he will perform the regular Temple Punch instead of the enhanced even though the finisher requires him to use the enhanced version.
  • Jason is one of five characters whose voice will not be mimicked by the Predator, instead, the Predator will do its signature laugh. The other four are Alien, Triborg, Leatherface and the Predator in a mirror match.
    • Since Jason is the only character that does not speak or make a vocal sound, there is no voice to mimic.
  • Jason has the most grab attacks out of any character in MKX, with a total of 4.
    • He also has the most tick throws out of any character with a total of 24. Tick throws are grabs that connect on blocking opponents if Jason does certain normal attacks before the grab itself. These grabs are listed below:
      • Tick throws with Tight Squeeze:
        • Back 1, Back 2, Forward 2, Back 3, Down 1, Down 3, Down 4, Jump Attack 1, Jump Attack 2, Jump Attack 3, Jump Attack 4, Standing 1, and the Kombo string 2,4.
      • Tick throws with Back Breaker:
        • Down 1, Down 3, Jump Attack 1, Jump Attack 2, Jump Attack 3, and Jump Attack 4
      • Tick throws with his basic throw:
        • Jump Attack 1, Jump Attack 2, Jump Attack 3, and Jump Attack 4
      • The Final Friday combo is also considered a tick throw.
  • Jason is one of two characters with a soft stun attack rather than an actual stun attack like Scorpion's Spear or Sub-Zero's Ice Ball. The second is Leatherface although, unlike Jason, he has a regular stun attack as well.
  • Jason and Kotal Kahn are the only characters with anti-air grab abilities. However, unlike Kotal Kahn, Jason cannot combo off his anti-air grab.
  • Jason has the second most damage bonuses in MKX, a damage buff and a passive damage buff. The character with the most is Kotal Kahn with 3.
    • Jason can only have one of each active in his variations, while Kotal Kahn can have all 3 active at once.
  • Jason, Kotal Kahn and Ferra/Torr are the only characters that can increase the damage of their damage buffs further than normal. Additionally, each have their own traits:
    • Jason - If he enhances Punishment into Rampant, the damage buff increases.
    • Kotal - Every single parried attack from Mace Parry further increases Kotal's damage and stacks with every successful parry.
    • Ferra/Torr - Pain And Gain stacks three times, increasing the damage upon every use and capping at three.
  • Jason and Johnny Cage are the only characters that that gain a damage boost based on a certain level of remaining health. Additionally, both have specific traits with each:
    • Johnny - Only his special moves gain the damage buff. Additionally, he gains a new throw that deals increased damage.
    • Jason - The damage bonus increased the lower his health is and effects all his attacks and special attacks.
  • Jason is the only character that can grant armor for a period of time.
    • Unlike other fighters who grant armor for a single hit, Jason's grants armor for multiple hits.
  • Jason is the only character that can reverse the opponent's controls.
  • Jason is the only character without an action after winning a round where he is forced to give his opponent space; he simply turns and walks away immediately upon winning a round.
  • Jason is one of the few characters whose fighting style is altered by the addition or removal of a weapon.
  • Jason is one of the few characters with a projectile that strikes Mid rather than High, meaning the attack is unavoidable when ducking. It can however miss females when they perform a low poke attack.

Mortal Kombat Mobile

  • In the mobile version of Mortal Kombat, Jason's Slasher Card is one of the few characters where all his special attacks are unblockable.
  • While his Unstoppable Variation allows him to resurrect in the MKX, in Mortal Kombat Mobile, his Slasher Variation can do this as well, but twice rather than once.
  • Jason is one of the few characters to receive an exclusive reskin in the mobile version of Mortal Kombat not featured in Mortal Kombat X.
    • He is also one of three DLC characters to receive an exclusive reskin, the others being Tanya and Goro.
  • He is the only character in Mortal Kombat Mobile to have music play when tagging in.
    • Music also plays when his Nightmare Card's Passive activates on the opponent.
  • He is one of the few characters with every variation available in the mobile version of Mortal Kombat.
    • He is one of two DLC characters with every variation available to play in the mobile version of Mortal Kombat. The other is Triborg.
  • Jason's Nightmare Card is one of four cards whose Special 2 changes, the others are Klassic Liu Kang, Triborg as Cyber Sub-Zero, and Day of the Dead Jade. Certain requirements must be met in order to activate the new specials:
    • Jason - After successfully performing two Special 2s, the attack alters with Jason throwing the combat knife away and performing an entirely new special instead. Additionally, the attack no longer causes a bleed damage-over-time effect.
    • Liu Kang - When on fire, either caused by himself or the opponent, Liu Kang summons a fire dragon that torches the current opponent and applies fire damage-over-time to the current enemy and their tagged out teammates instead. Additionally, the does not have a mini-game for a damage bonus.
    • Triborg - With a drone active, his Special 2 alters with all his arm strikes now having ice weapons and he adds an additional ice attack after sliding into the opponent for more damage.
    • Jade - Achieving 80% or more on the second mini-game has her throw a razor rang for more damage. Additionally, if Jade is at a certain health level, she will teleport above the opponent and stab them multiple times, similar to Kitana. Additionally, if Jade drops to a certain health percentage, after the flip kick, she may teleport behind the opponent, stab them repeatedly and steal their health.
  • Jason's Nightmare Card and Jade's Assassin Card were originally the only characters that could completely avoid special attack damage with their passive, with the exception of X-Rays.
    • As of Update 2.0, due to Assassin Jade's updated passive, both Assassin Kitana and Skarlet can now dodge specials when teamed with Jade.
  • As of Title Update 2.0, Jason is one of three guest characters with a Diamond Card, the others being Freddy Krueger and Leatherface.
    • As of the December 2019 update, The Terminator also falls in this category.
  • As of Update 2.0, Jason is the only guest character in Mortal Kombat Mobile to not only have three playable cards, but to have a Diamond and Gold card.
  • Jason's Attack Support Card features him holding a weed wacker, a possible reference to Dr. Crew's death in the 7th film, New Blood.
  • The chain around Jason's neck in his Unstoppable Variation in MKX is absent in the mobile game for his Unstoppable Card, however it is used for his Nightmare Card, which was originally his Relentless Card.
  • Jason's Unstoppable Card also uses Jason's alternate colors from MKX.
    • Jason is one of the few characters that uses their alternate character color for the appearance of a Character Card.

Mortal Kombat 11

  • Kabal was given a Jason-themed Outfit and Gear Kosmetics as DLC for Halloween.

Errors

  • When viewing Jason's bio, the second to last line has an extra space and is missing a period at the end of the sentence.
  • When previewing Jason's Slasher Variation, the note for the variation does not include his altered combos, basic attacks and the new combos gained by the inclusion of his machete unlike other characters' variations that include the note.
  • After performing his X-Ray, one can see that the hand Jason wields his machete with will clip into his thigh when retracting his hand.
  • When Jason performs his X-Ray Brutality while in his Unstoppable variation, after he removes the machete to decapitate his enemy, the chain around his neck will disappear. This is likely an error in programming.
    • This is also the case when a Fatality or Faction Kill are used on him while in his Unstoppable variation as the chain will vanish.
  • During one of Jason's interactions, he removes a combat knife from his neck and throws it to the ground, leaving behind a wound in his neck. While his Unstoppable variation is selected, when he removes the knife, no wound will be visible on his neck but blood will still be visible. It is unknown how or why this happens.
  • If one looks closely during Jason's enhanced Choke Slam, he does not actually close his hand to snap the opponent's neck, giving it the illusion that it snaps on its own.
  • During certain Fatalities, Jason will audibly moan before falling dead. This is easily heard during Goro's Peek-A-Boo Fatality and Jax's Jax The Ribber Fatality. This is likely a gameplay mechanic as all male characters make the same moaning sound, including the Alien and the Predator.
    • However, he will not make any noise when the Kove Stage Fatality is performed on him.
  • When a Fatality is used on Jason that creates a hole around his mouth, one can notice that the wound is see-through on the ends. This is more noticeable when his mask is removed using a hack.
    • Additionally, when a large wound is made in Jason's chest, you can visibly see-through his jacket in the side. This is easily seen when his Kill For Mother Fatality is performed on himself or during the end of Takeda's Head Cage Fatality.
  • When Jason performs his Kill For Mother Fatality on characters that are taller then him, such as Goro or the Predator, he will incorrectly be taller than them when performing the finisher.
  • Jason's X-Ray has a tendency to incorrectly connect due to an odd hitbox;
    • The attack is registered as a Mid attack, but can miss if the opponent ducks on some occasions.
      • If the attack is used from afar and Jason is still approaching a blocking opponent, the attack will completely miss them.
    • Jason sometimes does not have to actually make contact with the opponent for the attack to initiate.
      • This is similar to the hitbox of the Alien's Chop Chop during its The Slicer Brutality.
      • This is also the case with the hitboxes of some characters' Uppercut attacks, striking the opponent without making any contact whatsoever. See Glitches and Errors.
    • Sometimes if the opponent successfully jumps over Jason to avoid the attack, even being completely behind him in the process while mid-air, they will teleport into his hand, and the attack will initiate.
    • On some occasions, if the opponent dodges his X-Ray entirely and Jason is still walking, running up to him and making contact from behind will teleport the opponent into his hand, initiating the attack.
  • Jason's X-Ray Brutality can trigger despite him not taking the required steps during to actually activate it.
  • When playing his Slasher Variation, his machete disappears then reappears in the opposite hand when performing his Kill For Mother Fatality, which makes no sense since the blade is already present. It also gives it the illusion that the blade teleports.
  • As stated above, blocking Jason's X-Ray attack while his armor bonus is active has a chance to remove the buff entirely. This is more than likely a glitch and the cause of it is currently unknown.
  • After Jason decapitates his enemy during his X-Ray Brutality, he and his opponent become darker in color saturation for an unknown reason. This also happens with a majority of the characters that have an X-Ray brutality. This is easiest to see with Tremor.
  • When Jason wins a round and turns and walks away from his opponent, his hands clip into his thighs as he walks away.
  • When Jason loses a round and stands back up to crack his neck, while in the Slasher Variation, his machete will completely clip through his thigh as he cracks his neck.
  • On rare occasions, if Jason cancels a Resurrection, the damage from whatever attack he was struck by will read 100% + the final hit. When done with combos or specials, it will do the same. This does not occur with X-Ray attacks.
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