Piccolo

Piccolo is a namekian who is also the reincarnation of king piccolo.At first he was born to avenge his fathers death by killing goku .He`s somewhat serious and a bit of a loner.During the fight with raditz piccolo gets his arm blasted off by raditz`s double sunday after the battle was over he was able to grow his arm back.After goku`s death piccolo realizes gohans hidden power he decides to train him .piccolo`s training involves survival and sparring.After gohan`s training they are the first to arrive to the battlefield and meet up with krillin and later the others.Piccolo shows that he can very well hold his own against nappa but not damge him.Since yamcha tien and chiaotzu died in battle it was up to gohan krillin and piccolo to stall the saiyans until goku arrived.In the process nappa fired a deadly blast at gohan and piccolo sacrifised himself to save gohan.