Vegeta

The son of King Vegeta, Vegeta started out as an evil character but when he learned Frieza had killed his father and all of the Saiyans except for a small hand full he tried to gather the Dragon Balls on Namek to with for immortality. Vegeta didn't get his wish but he did help a lot in destroying Frieza. He was eventually killed by Frieza but only in his final form. Vegeta was wished back soon after and saw the very end of the fight between Goku and Frieza. Vegeta saw Goku had become much stronger than him and gone Super Saiyan and Vegeta hasn't stopped training since. After Frieza is beaten he waits for Goku's return from Namek on Earth and slowly becomes one of he good guys. He starts a calm life with Bulma and his son Trunks and later his daughter Bulla. As Vegeta's years go by, he get's older but still trains and fights when needed. Vegeta marvels at how powerful Goku has become, not to be out done Vegeta survives the process of becoming Super Saiyan 4. Vegeta and Goku also fuse several times in the series.