Dragonball Comedy
Biography
Raditz was the first villain the z crew fought (actually it was only Piccolo and Goku but nevermind). Raditz came to Earth to find his brother Kakarrot a fellow saiyan who was meant to have destroyed Earth by now but for some reason he didnt finish the job so Raditz decided to destroy Earth instead. We found out that Raditz's brother Kakarrot is actually Goku. Raditz fought Piccolo and Goku and was certain he would win because he had a higher power level. However, he trusted his scouter too much and was shocked to see the power levels of Goku, Gohan and Piccolo when fighting and died at the hands of Piccolo's Special Beam Cannon.
The Alternative Theory
Raditz once upon a time was a magic frog who granted people wishes if they fed him Pot Noodles. But one day an evil gay guy from the University of Gays put a spell on Raditz that turned him nto a saiyan. Raditz didnt actually die. He just left the battle and decided to set up a hot dog stall as a cover for his search for the gay guy who turned him into a saiyan. Raditz was last seen as a member of the new village people because he thought the gay guy was one of the new members.