The Trident is a cybernetic weapon that is similar to Scorpion's spear. It is used by both Cyber Smoke in Mortal Kombat 3. It the Cyber Smoke equivalent to Cyrax's Bomb and Sektor's Rocket.
In Mortal Kombat X, the shapeshifting cyborg known as Triborg uses the abilities of many former Cyber Lin Kuei assassins, including using Smoke's Trident.
Krypt Kollector Item: Robotic Spear.
Krypt Concept Art of the Nethership interior, which shows one Ninja holding a Trident in kombat.