Hercule Satan is a humble superhero that only wants to spread good. He is Over 9000, but he secretly masks his power.
Satan was born in 666 AD in a
humble village the biggest city on Earth. He trained in mediocre classes, somehow becoming the strongest man on earth. However, he masks his power, even in dire situations, such as against Cell.
However, he didn't mask his power during the World Martial Arts Tournament. This is because he wanted to end the myth that Goku and Vegeta were stronger than him and he beat them with his index finger.