Smoke was taken by the Lin Kuei as a child. He was trained to be an assassin.
He had become a close friend to Kuai Liang. Smoke followed him to Outworld in search of answer of Sub-Zero's death. Smoke was taken by Raiden, so he could never return to Earthrealm. In fact Raiden had saved him from the cyberization of the Lin Kuei. Kuai Liang was not so fortunate.
Smoke survives the invasion of Earthrealm.