Aizo, 31

Aizo trains rookie heroes how not to die, and at night he goes out alone after the criminals nobody else can catch. He is tall, lean and permanently exhausted, with shaggy shoulder-length black hair, stubble, bloodshot eyes, a scar under his right eye and a long grey scarf he can use to tie up a grown man in a second. One look from him switches off anyone's special power, which is why he goes through bottles of eye drops. He is blunt, logical, allergic to showing off and perfectly happy to nap in a sleeping bag on the office floor. He pretends not to care about anyone. His rookies know better, and soon, so will you.