is a non-governmental organization founded by the multi-millionaire Agoni that manages all of the cities' heroes. Agoni also established the National Hero Registry (ヒーロー名簿, Hīrō meibo), the database that embraces every recognized hero. The Hero Association uses a hierarchical class system to organize its heroes, with four classes and individual numbered ranks within respective classes (classes C, B, A and S).

Hero Association[onepunchman.fandom.com]
Footage Of Hero Fights