Raphael is the funniest antagonist in the game to me, he's a powerful devil trying to steal your soul and speaks to you in rhymes that he probably practices in the mirror, he has his own incubus that says he's a bottom only and bad in bed, and then you can call him out. You can go and rob him blind and then kick his ass in his own house.
You can ask some guy he had you kill if he wants to help you kick his ass, and if you convince him he'll go 'yeah sure I bet you'll win' while Raphael is standing right there.