Krillin is one of the most powerful and talented martial artists on Earth. He is courageous, faithful, and good-natured. Krillin had a brief rivalry with Goku when they first trained under Master Roshi, but they quickly became lifelong best friends, to the point that Goku cares for him as much as his family and closest ones. He is a prominent Z Fighter, despite usually being overpowered by the major enemies.