One-Punch Man features a world filled with heroes, villains and monsters. However, any world featuring those with incredible abilities needs to have rules for heroes to follow. Here's a list of strange, but important, rules characters need to follow to be heroic in One-Punch Man.

We're starting out with the Hero Association and the National Hero Registry, which pretty much anyone who wants to do good has to join. Failing to do so means characters won't really get recognition for their deeds. This leads to a test in which prospective heroes are divided into various classes. The tiered system is, frankly, kind of bizarre. Despite being the strongest hero imaginable, Saitama starts out at the bottom after finding out about the organization. The requirements for the actual test are shockingly lax when it comes to taking on potentially life-threatening monsters, leading to a lot of C-Class heroes who are really only good for getting better heroes to come and help.

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Check out the video below for more of the strangest rules heroes in One-Punch Man need to follow, culminating in one that's truly bizarre, though entirely necessary to the series in terms of fleshing out the character of Saitama.

Initially released as a web comic, One-Punch Man was created by ONE in 2009. The series follows Saitama, the titular one-punch man, as he searches for a worthy opponent, finding he's completely overpowered. The series went viral and was given a remake illustrated by Murata and appearing in Shueisha's Tonari no Young Jump. The manga is licensed by Viz Media in English. One-Punch Man Season 1 debuted in Japan in 2015, with a dub following the next year. Season 2 is airing now on Hulu.

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Produced by J.C. Staff, new episodes of One-Punch Man debut every Tuesday on Hulu.