Revan

Revan is the primary character of the 2003 game Knights of the Old Republic.

In-universe Information
Revan was one of the most powerful Force-users in galactic history. Starting out as a Jedi, he fell to the dark side under the influence of the Sith emperor and became the feared Darth Revan, with his friend Malak becoming his apprentice, Darth Malak.