Kuai Liang (Earth-3900)

Sub-Zero, real name Kuai Liang and formerly known as Tundra is the Grandmaster of the second incarnation of the Lin Kuei and the younger brother of Noob Saibot, the former Sub-Zero. A descendant of the Cryomancers and a high-ranking of the first Lin Kuei incarnation, Sub-Zero undertook a quest alongside his best friend Smoke in order to avenge his brother's death at the hands of Scorpion. However, Sub-Zero would in time grow more concerned for the safety of Earthrealm, and then became a member of the Defenders of the Realm after Smoke was captured by Cyrax and Sektor and turned into a Cyborg as pet the Lin Kuei's Cyber Initiative.