Pentious wears a dark gray jacket with yellow vertical stripes, underneath a yellow shirt, and a black bow tie with a yellow center. Under the jacket there is another large eye. On his head he wears a dark gray hat that looks like a top hat with a black stripe and a large eye on it, which also changes with his mood. He also wears black fingerless gloves with yellow dots on each knuckle. Sir Pentious also has black hair on the outside and yellow on the inside, which flares open depending on his mood like a cobra's hood. There are four eyes on the hood, the tips of the hood are yellow. He has a wide mouth, sharp yellow teeth, fangs that protrude from his mouth like a snake. The eyes are exactly the same as those in the hair and tail. Sir Pentious is characterized by impulsiveness, a quick temper and frequent mood swings; he can instantly become angry with annoying assistants after a gloating triumph. Sir Pentious likes to be proud of how evil and strong he is, although in reality this may not be the case at all. During battle, Sir Pentious favors the use of his vehicles, weapons, and minions, as he is inexperienced in hand-to-hand combat. Sir Pentious's vocabulary is particularly old-fashioned (although he occasionally indulges in more modern swear words), and his understanding of sexual jokes leaves much to be desired. Demonic Transformation: Pentius possesses a common trait shared by every demon, which is the ability to easily transform into a full demonic form and back into its default normal form. Multiple Eyes: Pentius has eyes throughout his body, allowing him to see in multiple directions. Constriction: Sir Pentious can constrict his victims with his tail. This is demonstrated in the pilot episode when he crushes one of the egg minions with his tail. Sir Pentious turns this trait into a metaphor when he talks about his plan to take over Hell, claiming that no one will be able to escape its "squeezing grip".