Unit 5

Unit 5 is a cyborg that works for the Lin Kuei. He is only seen in Mortal Kombat (2011) ' s Challenge Tower trying to get in contact with Cyrax and Sektor after locating Reptile, which was his target.

Abilities
Unit 5 can see through Reptile's cloaking ability, something that makes the saurian understand that he will need better camouflage to ambush Cyrax and Sektor. He can only be damaged by acid in the challenge so he is invulnerable to physical attacks.

History
Not much is known about Unit 5's history. He appeared as a cyborg working for the Lin Kuei, whose goal was to target Reptile. After targeting Reptile he reported to Cyrax and Sektor using his communicator but before they could arrive at his location Reptile killed him and took possession of his armor.

Under the disguise of Unit 5, Reptile attacked Sektor with the Acid Spit attack, giving away his cover.

Trivia

 * While Unit 5's first appearance is of a gray version of Cyrax, when Reptile steals his identity, he looks similar to Cyber Sub-Zero, but with green paint.