Sir Nighteye is a tall, lean, muscular man with sharp and elongated features. His shiny hair is always worn, smoothed down, and parted to his left, and is dark green, with three yellow streaks towards the front, two on his right and one on his left. His eyebrows are also yellowish, matching the rims of the triangular glasses he wears and the strikingly brigh yellow irises of his stern-looking eyes. His looks give off a sense of authority and power, as he rarely smiles and looks stern. His real name is Mirai Sasaki. He’s a pro hero.