The Algebraist
Seriously, sci-fi epic that includes the most ridiculous villian I have ever encountered, warlord Archimandrite Luseferous of the Starveling Cult. The man has all of his teeth replace with diamonds, in order to have the most impressive grille in the universe. He is introduced in a scene where he is using the severed head of a rebel leader, who is attached to cables funneling nanobots and fluids for regeneration, as a punching bag, kills another assassin by genetically modifying his teeth to continue growing to eventually curve and pierce his brain, is hinted to have have had brain surgery in order to make himself more evil, is able to cum truth serum and various poisons/venoms and is strongly hinted to be sexually aroused by nuclear explosions.