Captain Diomedes

Brudda-Captain Diomedes is the protagonist of the DLC for Dawn of War II, called Dawn of War II: Retribution. He acts like a dumbass and doesn't want to believe that Kyras or whatever the hell his name is was corrupted, but then Kyras or whatever his name is turned into a damn daemon prince, and suddenly Diomedes believes you and becomes a playable character.

He later appears in Dawn of War III, (the game nobody talks about because its bad) as a Chaplain.