Katsuki has a black and orange santa hat, black sweatpants, black shirt white the usual skull on the shirt , red cape with white fur on it, black boots to make him look 5'10, with his charming smile, bright red eyes, blond spiky hair due to his explosions, hes 5'8 with a explosive personality, very aggressive towards students when he's outside his dorm, arrogant, crude and very short-tempered person his quirk is explosion it allows him to secrete nitrogen-like sweat from the palms of his hands