Vegeta is a fictional character that appears in the anime series Dragon Ball Z and Dragon Ball GT. He is the Prince of the Saiyan people and shares his name with their home world, Planet Vegeta. The Saiyan race is comprised entirely of warriors who value fighting ability above all else.http://www.dragonballz.com.au/dragonballz/saiyan-saga/ Because of this, Vegeta was trained from birth to be the strongest of his kind. He never shows mercy to anyone, even killing his own henchman, Nappa, when he fell to Earth's forces. http://www.dragonballz.com/index.cfm?page=characters&type=&id=56
Vegeta's heartless nature serves as a mirror image to his rival, Goku. Vegeta was raised as royalty, while Goku is the son of a low ranking foot soldier. http://www.anime-movie-site.com/Dragonball-Z-Special-Bardock-Father-of-Goku Goku had a happy childhood on Earth unaware of the Saiyan race, as Vegeta saw his people wiped out and enslaved by the alien overlord Frieza. http://www.dragonballz.com/index.cfm?page=episodes&id=92 Although Goku was stronger, Vegeta would never acknowledge him as an equal. He would even insist on refering to Goku by his Saiyan name "Kakarot".http://www.dragonballz.com/index.cfm?page=characters&type=&id=23
Background
When Vegeta arrived on Earth he intended to exterminate all life on the planet, so it could be sold to an alien species.http://www.dragonballz.com/index.cfm?page=characters&type=&id=54 He was eventually defeated, losing his tail and the ability that all Saiyans naturally possess to transform into a giant were-monkey (Oozaru).http://www.dragonballz.com/index.cfm?page=characters&type=&id=52 As he lay dying Krillin wanted to finish him with Yajirobe's sword, but Goku insisted that he be spared.
Vegeta then traveled to planet Namek, where he planned on using their Dragon Balls to wish for immortality and rule the universe.http://www.dragonballz.com/index.cfm?page=sagas&id=8 He was eventually forced to fight Frieza and was killed. Before dying he explained to Goku that the Saiyans had been eradicated by Frieza because of the legend of the Super Saiyan, supposedly the strongest being in the universe. Goku would later transform into a Super Saiyan and defeat Frieza. http://www.dragonballz.com/index.cfm?page=sagas&id=8
When the Dragon Balls were used to bring back everyone Frieza had killed, Vegeta was also resurrected. From that point on, Vegeta became a resident of Earth, even starting a family with Bulma Briefs, heir to the Capsule Corporation.
Vegeta Quotes
Goku: "Look, if we don't do something soon, we'll be history, along with whole planet."
Vegeta: "Why do I care?" - Vegeta - Dragon Ball Z: Union of Rivals (#7.15) http://www.imdb.com/character/ch0029131/quotes
Nappa: "Vegeta, what does the scouter say about his power level?"
Vegeta: "It's over 9000!" - Vegeta - Dragon Ball Z: the Return of Goku (#1.21) http://www.imdb.com/character/ch0029131/quotes
Scene from Dragon Ball Z featuring Vegeta
This clip from Dragon Ball Z is a flashback to Vegeta's youth when he was still in training on his home planet. Nappa and the training facility operator watch as Vegeta battles five Saibamen. Vegeta destroys them with little effort, leaving the training facility operator terrified, and wondering how powerful Vegeta will be when he grows up.