I just realized why Saitama is bald

[u/Sakgeres]

Like I know it's meant to be a joke to be bald. Get stronger -> no hair = funny. But then I realized it's a direct opposite to dragonball series where the hair grows longer when you become stronger, in Saitama it's the exact opposite. The stronger you get, the shorter the hair, so no hair = strongest. With all the references of vaccine man I can't believe I'm just realizing it now. Or maybe I'm wrong and ONE just thinks being bald is funny idk.

[u/fadeddreams555]

Yeah, it's basically mocking a common anime trope where the hair of the protagonists change or get longer as they transform or get stronger. He directly parodied Goku's forms by using Boros.