The DBZ info page

Name: Vegeta (Vegitable): He is the prince to the planet Vegeta where the saiyan's came from, after Radditz is killed and knows about the dragon balls he sets off for earth.

Name: Radditz (Radish): He is Goku's brother and came to earth to check up on Goku but finds out he hasn't fulfilled his mission to destroy all humans. He is furious and takes Goku's son, Gohan. He is killed along with Goku when Piccolo hits them with his Special Beam Cannon.

Name: Gohan (Meal, Rice): He is Gokus' son. His mom Chichi doesn't want him to fight but wants him to study making him really smart. But his fighting potential is proven when he fights Radditz and cracks his armor. Gohan is trained by Piccolo and becomes a great fighter.

Name: Piccolo (instrument(flute): An evil character but changes do to certain events. He is almost as strong as Goku ( they always fought before ) and is a Namek. He was created when Kame split himself and Goku killed the evil half the evil piccolo spat out an egg and the new Piccolo was born. He is killed defending Gohan from an attack by Nappa ( Vegetas partner ).

Name: Nappa (Chinese Cabbage): The sidekick to Vegeta, he did all the fighting on Earth and destroyed a couple blocks of city before Goku got back from King Kais planet. He was badly beaten by Goku then Vegeta blows him to Saiyan kibble because he failed.

Name: King Kai (????): He is the greatest martial arts master and he trained Goku, Piccolo, Tein, Choutsu ( I think that's how it's spelled ), and Yamcha. He taught Goku the Spirit Bomb, and Kaio Ken attack.

Names: Tein, Choutsu, Yamcha ( The Trio ): I call them the trio because they always seem to be together. They help Goku through most of his ordeals and are great and loyal friends. Yamcha has a little 'thing' for Bulma.

Name: Bulma ( a type of girls underwear ): Bulma is a technical genius and her father built the space ship Goku took to get to Namek to fight Frieza. ( In my opinion she the hottest anime babe next to Commander Silvie Genia in Macross II ). mmmm...Bulma. cough...ok. She also helped Krillin and Gohan on Namek with the Dragon Radar.

Name: Krillin ( little bald guy with no nose ): He has been Gokus friend since childhood. He is also a close friends with Gohan and Master Roshi. he helped Goku reach SSJ, I won't tell how though.

Name: Master Roshi ( an old martial arts master, he's a little loose upstairs ): The one that trained Goku and Krillin when they were young. A great friend and like a father to Goku.

Name: Frieza (free,za): The most evil being in the Universe ( for now ), he's killed millions of people and many planets. He killed Dendai, Vegeta, Krillin, the eldest namek, (which drove Goku to SSJ). He can transform into differnt forms which each have a stronger power than the last.