The prototype Cyber-Ninja (Unit LK-4D4), built by the Lin Kuei clan, Cyrax is the perfect martial artist: no feelings, no flaws. Allied with Shao Kahn, the creature is given the job of destroying a military installation and killing Jax and Sonya Blade. Cyrax is an efficient killing machine, unable to quit a fight until it has either eliminated its target or been destroyed.

He is able to expel firebombs from his abdominal launch cavity, shooting shockwaves of energy from his hand and using his deadly energy net (the fibres of which are made up of microbe-sized, fleshing-eating robots).