Обсуждение Star Wars - Knights of the Old Republic

According to the lore, the main character is indeed evil.

This doesn't change the point; I was talking about the players. :)
I haven't read the canon version, but if that's the case, the Exile is a weak-willed girl, not worth a single hair on Revan's head. :p

By the way, I heard that after completing the game three times, some additional content is unlocked. Is this true?

Yes, to unlock it, you need to complete the game three times on each difficulty level.