As a young boy, Krillin studied martial arts with Goku under Master Roshi. Originally he and Goku were fierce rivals, but now they've become the best of friends. Krillin realizes that the Power of Light is very strong within Goku and holds him in very high respect. A short, bald warrior, Krillin provides comic relief in tense situations as he tries to keep up with Goku and the other powerful warriors. But don't get the idea that he's a helpless buffoon. A good fighter on his own accord, Krillin is always there to help Goku. He has saved the lives of his friends on more than one occasion. In fact, Krillin can unleash an incredibly powerful energy blast shaped like a flying disk that literally slices through mountaintops.

Krillin is incredibly dedicated to his friends, especially Goku, and holds friendship in high regard. He is willing to fight against the Saibaimen and Saiyans even though he knows that he can never be brought back to life by the Dragonballs. Goku constantly encourages Krillin to have confidence in his own abilities. For an Earthling, Krillin learns to become a remarkable fighter.