Smoke

Smoke is a Lin Kuei assassin and a hero in the Mortal Kombat series. He was transformed into a cyborg.

History
Smoke also known as Tomas Vrbada, is a member of the Lin Kuei. He is a close friend and ally of the younger Sub-Zero.

Mortal Kombat 2
Smoke was orignally a secret character along with Jade. He was then a human.

Mortal Kombat 3
Smoke then became a cyborg along with Cryax and Sektor, but managed to keep his human soul and fought for the heroes against Shao Kahn. He was orignally programmed to kill Sub-Zero, but retained his soul and became one of Raiden's chosen warriors.

Mortal Kombat Armageddon
Smoke was fighting with the Forces of Good against the Forces of Evil.

Mortal Kombat (2011)
Smoke, along with the younger Sub Zero, split to find the murderer of the Elder Sub-Zero. While searching for Shang Tsung and defeating him and Reptile, he nearly got automated by the Lin Kuei, but was saved by Raiden and allied up the Earthrealm Warriors.