One Punch Man RPG

The Hero Association is an organization founded by the multi-millionaire Agoni that manages all of the cities' heroes. It operates independently of the government. Agoni also established the National Hero Registry, the database that embraces every recognized hero. The Hero Association uses a hierarchical class system to organize its heroes, with four classes and individually numbered ranks within respective classes (classes C, B, A, and S).

The Boss is the Monster King, Orochi, although the organization is actually overseen by the Military Advisor, Gyoro Gyoro (who is actually a puppet of Psykos, the creator of Orochi). Directly below them in ranks are the Executives (幹かん部ぶ, Kanbu), also known as Cadres (referred to as Leaders in the Viz Media), who are specially promoted by Gyoro Gyoro.
The Monster Association is founded on the belief that one monster alone will eventually fall, but all of them together can defeat the heroes. The goal of the Monster Association is to end the Hero Association and create a world of monsters ruled by Monster King Orochi.