Raditz
Raditz is the older brother to Goku and is the son of Bardock and Gine. He was the first villain to appear in Dragon Ball Z. He originally came to earth to get Goku to join him in the destruction of other planets. He wanted Goku to kill 100 humans. Goku wouldn't do it though. Raditz then takes Gohan and said he would kill him and destroy the Earth if he didn't do what he asked. Goku then chases after Raditz with former villain Piccolo. They battled Raditz. Goku and Piccolo killed Raditz, but not with out a loss. Goku grabs a hold of Raditz in a hold he cannot escape. Raditz tries to talk Goku out of it, but Goku won't let go. Piccolo uses his new move called Special Beam Cannon and kills both Raditz and Goku. Goku knew he had to sacrifice himself to defeat Raditz. Goku is later brought back to life with the Dragon Balls.