Krillin

Though initially a rival to Goku, this short, bald monk studies with the erstwhile martial artist under Master Roshi, eventually becoming one of the strongest humans on the planet. Whether evenly matched or overwhelmed, Krillin's kindhearted nature, strong sense of justice, and fierce determination means that he never backs down from a fight. That said, he, like Master Roshi does have a thing for women--though it rarely distracts him from the task at hand.