Saitama

"Let me make one thing clear! I'm not working as a hero because I want you morons to admire me! I do it 'cause I want to!"

- Saitama to an oppesing crowd "If the heroes run and hide, who will stay and fight?"

- Saitama

Saitama used to be a normal, down on his luck kind of a person who had a hard time finding a job, until he saved a (rather large chinned) boy who was being attacked by a crabman, who was mad at the boy becease the boy drew nipples on him while he was sleeping.

After this event Saitama decided to train to become a hero. He eventualy achived his goal by doing 100 puch ups, 100 squads, 100 situps and a 10 km jog every singel day. This 'intence' strenght training somehow granted him the strenght to defeat every oppenent he meets with only one punch (and also turned him bald).