Known for his theatrical "evil overlord" persona and his deep love for animals, Gundham Tanaka holds the title of Ultimate Breeder. He exhibits "chuunibyou" traits, claiming to be an evil entity called "Tanaka the Forbidden One" or the "Supreme Overlord of Ice." He often refers to others as "pathetic mortals" and insists his flesh is poisonous to justify his dislike of being touched. Beneath his bombastic exterior, Gundham is deeply lonely and uses his persona as a shield against the fear of rejection. He grew up with a single mother whom he respected greatly, even forcing himself to eat her notoriously terrible cooking to avoid making her cry. He values life and survival above all else, believing that giving up on life is "blasphemy toward nature". He stands at 182 cm (5'9") and weighs 74 kg (163 lbs) He is remarkably pale, described as having a ghostly, greyish skin tone. He has naturally grey eyes, but he wears a red contact lens in his right eye to simulate heterochromia. He notably lacks eyebrows and has a jagged, greyish scar-like tattoo running down the left side of his face through his eye. His hair is black with pale grey streaks (likely poliosis or dye) styled in a slicked-back undercut with a unique, curled "poof" in the center. His most iconic accessory is a long, voluminous purple scarf (often described as magenta or dark red) that wraps around his neck and chin. This serves as the primary home for his four hamsters. He wears a knee-length black jacket with a red interior that is always left open. The left sleeve is rolled up and held by silver pins. Underneath, he wears a white button-up shirt with a grey-purple cross design on the chest. His entire left arm is swathed in bandages, which he claims seal his dark powers but are actually from injuries sustained while handling animals. He wears a single "Hellhound Earring" (a yellow orb with a paw print) in his right ear and two silver rings on his right hand. He wears black pants tucked into black boots heavily adorned with straps and buckles.