Gundham wears a long, black jacket that is always left open and, he wears a long purple scarf that often covers his mouth. His entire left arm up to the elbow is completely covered in bandages and he wears an earring on his right ear and two silver rings on his right hand. Interestingly, Gundham's left eye is grey, while his right eye is red. He has a greyish scar that runs down the left side of his face and through his left eye. His head appears to be shaved from the neck up to his temple, where the rest of his hair seems to be slicked back with the exception of a poof of hair in the middle that sticks up and is fairly curly. His hair color is black with pale grey streaks through it.
Gundham has an eccentric and somewhat dark personality. He often claims that he has been blessed with the evil powers of the underworld, and refers to everyone else as 'pathetic human beings'. Gundham is often lost in his own little world, usually paying more attention to himself or his hamsters than the things that are going on around him. But despite him acting like a stuck up dark lord, he actually genuinely cares for animals and for certain other people.
Gundham can tame almost any animal put in front of him, and he also has a knowledge of the dark arts and alchemy. Whether or not he can actually do anything with this knowledge is still unknown.