Revan – Star Wars Knights of the Old Republic
When it comes to the video game lore of the Star Wars series, there is no character more interesting than Revan. This character is originally introduced at the start of Star Wars Knights of the Old Republic in a flashback that shows them to have died.
Despite their death, Revan is still responsible for the events of the game, as he is a former Jedi that turned to the Sith, causing a massive schism within the Order. Alongside Darth Malak, he helps the Dark Side grow in power considerably once he joins them, creating an entire Sith Empire of their own that dominated the Jedi.
If that backstory didn’t make the character interesting enough on its own, the reveal that he is the protagonist that players have been controlling throughout the whole game certainly does. This happens regardless of how players have chosen to play the game, meaning that even if he isn’t a Sith Lord by the end of things, he at least did some pretty dark stuff at the outset.