ティベリウス

A shrouded figure clad in black and red-striped robes, Tiberius is nothing more than a meager corpse, with his skeletal face covered by a lizard-like mask reflecting his current mood: green for content, red for anger and blue for agony. Sadistic and greatly delights in others' pain, he is the owner of the grimoire De Vermis Mysteriis (妖蛆の秘密 Yōshu no Himitsu, lit. Secrets of the Worm) and the Deus Machina Belzebuth. [From Wikipedia.]