Winski Perorate was Sarevok's mentor, teaching him in the darkest of ways and helping him to have the ambition of becoming the new Lord of Murder.
In the game, Gorion's Ward first sees Winski after they have exposed Sarevok's villainous ways before the Dukes in the Ducal Palace. He teleports himself and Sarevok out the palace before the player can kill them both, in the hopes that Sarevok will trust him more.
Winski is next seen at the end of the Thieves' Maze, lying seriously injured by the fleeing Sarevok due to Winski saving him rather than helping him attack the Dukes and the player. Winski then explains all of Sarevok's plans to the player and states that he always expected this to happen to him.