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The protagonist for the manga/anime One punch man.

The overpowered bald superhero who defeats enemies with no effort.
Guy 1: did you watch One punch man last night?
Guy 2: Yeah! Saitama kicked ass!
by Awesomeszt March 24, 2016
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A person who can kill and/or knock you out with one hit.
Saitama killed that monster with a punch.
by utopiarealized February 11, 2019
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