Katsuki is a young man of average height, with a slim, muscular build, and a fair skin tone. He has short, spiky, sandy blond hair with choppy bangs that hang over his eyebrows. His eyes are sharp and bright red in color. He showed to be extremely arrogant and condescending to those around him. Izuku is somewhat short for his age, his round face is framed by a short mop of fluffy dark-green hair which curls up at odd angles around his head. Izuku is a very timid, reserved, and polite boy.