Damien is a demon with red skin, and two darker red horns at the top of his head, the right-hand horn having been broken by himself. He also has a tail with a spade-like tip. He has maroon hair. Damien is described as "intense", and willing to "bring Hell upon those who dare bother him." He enjoys the simple things in life like setting fire to ants or causing mass havoc to everyone around him.