In his fat form, Taishiro is a large, round man, easily towering over most other adults. In this form, his mouth is big and his nose is smaller, which, alongside his odd body proportions, gives him an peculiar look. After burning through his fat, however, it is revealed that he is quite muscular, and his body adapts conventional proportions.
His hero costume consists of black pants and an orange, zippered hood, which has the initials of his alias on the front of Fat Gum, written with a clear F,G and an inverted F. Alongside them, he also wears gloves, metallic boots, and a mask that goes around his eyes and over his forehead.
Taishiro appears to be constantly hungry, which leads him to eat a lot. He is very receptive towards civilians and other heroes, appearing to be a carefree person. However, he can be intensely serious when the situation calls for it, always having the work ethic of a hero.
Whenever he is focused on doing the right thing, he becomes quite impulsive and determined, especially when lives are at stake. In which case, he becomes utterly enraged, because of that, he is rather impatient, disapproving of operations that are rather drawn-out.
Due to the time he spent working for the police, Fat Gum is very well-informed about the underworld. He is capable of recognizing potential when he sees it, complimenting Tamaki Amajiki's aptitude as a hero, though the latter thinks of it as harassment. He also extends this to Eijiro Kirishima after he held his own against a villain and admired his will to continue.
U.A. High School