Goku's older brother in the Dragon Ball Z series. Came to Earth and kidnapped Gohan to blackmail Goku into joining him.
Raditz was first created by Akira Toriyama, the writer and artist of the original Dragon Ball manga. His anime counterpart was brought to life by Daisuke Nishio. Similar to all Saiyans in the Dragon Ball universe, Raditz' name comes from a vegetable, in this case a radish.
Raditz travels to Earth to find his younger brother Kakarot (Goku) who had been sent there while still a newborn baby to destroy all life on the planet. Raditz is disappointed to learn that Goku has lost his memories and adjusted to life on Earth and refuses to join him. Raditz easily overpowers him and kidnaps Gohan to force Goku into becoming an ally, but Goku teams up with his old nemesis Piccolo to defeat Raditz and rescue his son Gohan. Goku and Piccolo arrive and battle Raditz however they find Raditz's power overwhelming however when Gohan sees his father in danger and in pain and agony Gohan explodes with rage and delivers immense amounts of damage to Raditz with a single head butt, realizing the advantage he has Goku locks Raditz in a full nelson and demands Piccolo to kill them both with the Special Beam Cannon, the beam impales both Raditz and Goku and after gushing blood and just before his death Raditz grins and sneers that two much more powerful Saiyans, Vegeta and Nappa would be coming to Earth in one year's time.
Raditz has the typical physical attributes of a normal Saiyan such as superhuman strength, superhuman speed, superhuman stamina, superhuman agility, superhuman durability, energy manipulation and the ability to fly. Raditz' strength overwhelms Goku and Piccolo in their first encounter however Raditz might have been powerful for them those years back he is considered a low class warrior due to him having the power level on par with that of a mere Saibaman and his strength has been greatly surpassed by all Z Fighters in the Dragon Ball series, Raditz has the normal superhuman speed, stamina and agility of a regular low class Saiyan warrior and his durability is not very effective as he was immediately killed by the Special Beam Cannon. Raditz can manipulate energy for various purposes such as energy blasts, energy spheres, energy enhanced strikes and energy shields and he is also able to fly like all Saiyans. Raditz is able to transform into an Oozaru due to his ape-like tail which all Saiyans have but can be cut off, Raditz is constantly depicted as extremely weak throughout the Dragon Ball series and during his time in Planet Vegeta when Saiyans wanted to refer to him they would commonly say "Hey look it's Raditz the weakling" and Vegeta and Nappa being elite Saiyan warriors commonly referred to him in that way.