Raiden appeared before Sub-Zero and asked for his aid in defeating The Deadly Alliance in Outworld. There, the new Lin Kuei could hone their skills without interruption. Sub-Zero relocated the clan to a remote location in the frozen Arctic where he had discovered an ancient temple frozen into the side of a glacier. With his freezing powers enhanced by the medallion, he vowed to reform the Lin Kuei as a force for good. Sub-Zero defeated Sektor and claimed the title of Grand Master. Deadly Alliance: "The future of the Lin Kuei hung in the balance as Sub-Zero and the cyber-ninja Sektor battled for control of the Dragon Medallion.secrets that could hold the key to stopping Shinnok." He also holds secrets passed onto him from his sibling. But with the new threat brought on by Quan Chi, the ice warrior once again dons the familiar costume once worn by his brother, the original Sub-Zero. Mortal Kombat 4: "After Shao Kahn's defeat at the hands of Earth's fighters, Sub-Zero's warrior clan known as the Lin Kuei is disbanded.He must not only defend himself against the Outworld menace, but he must also elude his soulless assassins." But unlike the ninja of old, his pursuers comes as machines.
He broke sacred codes of honor by leaving the clan and is marked for death. He was betrayed by his own clan, the Lin Kuei. Mortal Kombat 3: "The ninja returns unmasked.To do so he must fight his way through Shao Kahn's tournament." It is believed he traveled into the Outworld to again attempt to assassinate Shang Tsung. Mortal Kombat II: "Thought to have been killed in the Shaolin Tournament, Sub-Zero mysteriously returns.