Race: Half Saiya-jin, Half Human

Son of Goku, he is initially trained by Piccolo after the battle with Radditz. He looks up to Piccolo for being such a great fighter, and trys to immitate him by wearing similar clothes. He has the potential to become the most powerful being in the universe, yet since he cannot always fully utilize his strength, he can be defeated. Gohan is the first Saiya-jin to go SSJ2, but after the Cell saga he spends little time training and focuses on his studies.

Goku

Race: Saiya-jin

The main character of Dragonball, and a substantial role in DBZ, Goku is sent to Earth as an infant so he can prepare it to be sold. He could have easily eliminated all life on the planet, but he fell into a ravine and hit his head when he was young. He afterwards fights for the side of good, as the brainwashing had been undone. He is not too intelligent, but is a natural when it comes to the martial arts, and manipulating his Ki. Goku by far has the most abilities of any of the Z warriors, with the only villain having more being Cell. He marries Chi-Chi, daughter of Ox king; and together they have two sons, Gohan and Goten.

Goten

Race: Half Saiya-jin, Half Human

Goten is the second son of Goku and Chi-Chi. He and Trunks spend most of their time together, and are very good friends. Goten exhibited high power when he went Super Saiya-jin at the age of seven. He bears a very strong resemblance of Goku; and wears a miniture version of Goku's karate Gi. Goten is usually happy, but has a habit for throwing tantrums to get something he wants.

Gotenks

Race: Half Saiya-jins, Half Human

Gotenks is the creature that results after Trunks and Goten perform the fusion dance. He has a tendency to over-dramaticize the situation a bit (Alright, a lot), and makes up names for all of his attacks. Since Gotenks is young and naive, he believes that he can defeat anyone. Most of his assaults are incredibily stupid and ineffective, but he'll squeeze in a few that do some damage.

Garlic Jr.

Race: Makyo-seijin

A short goblin-like creature, Garlic Jr. is the son of Garlic Sr, who once challenged Kami-sama for the throne of God. After the battle for heaven, Garlic Sr. is sent into a vast Dead Zone where he eventually dies. Wanting to avenge his father's death, Garlic Jr. gathers the Dragon Balls and wishes for eternal life. In movie #1, he does battle with Goku, Piccolo, and Kame, and is sucked into his own Dead Zone. However, unlike his father, he manages to survive the dark and cold dimension, and returns after Freeza is defeated. Once again, he imprisons himself in the Dead Zone while attempting to absorb heaven into the void.

Captain Ginyu

Race: Unknown

Leader of the Ginyu force, he is by far the strongest of them all. It is not known whether the body he first appears with is his original form, as he has to power to swap bodies with other people.

Gerudo

Race: Basjin

The weakest member of the Ginyu force, he makes up for his lack of strength with his ability to manipulate time and space. Able to read minds and control objects with his mind, he can easily topple a much stronger foe.

Gyuu Mao

Race: Human

Gyuu Mao appears here and there throughout the series, his first appearance is back in Dragonball. He knows Kame-sennin because he trains with Gohan (Goku's Foster Grandfather) when he is still a pupil of his. Gyuu Mao occasionally pops up during the series but not that much. Usually we get to see him getting verbally abused by his own daughter Chi-Chi.

Pan

Race: Three Quarters Human, One Quarter Saiya-jin

Pan, also known as Pan-Chan, is Goku's granddaughter. She is the most powerful female in all of Dragonball. Pan is 1/4 Saiyajin, and she is Gohan and Videl's daughter. Pan is very adventurous, and can get into trouble, usually with Trunks and Chibi Goku. Trunks, Goku, and Pan go everywhere together, she is the little sister they never had.

Paragas

Race: Saiya-jin

The father of Brolli, Paragas is saved by his infant son's latent powers when Planet Vegeta is obliterated. Only an average warrior, he relies on his brain-washed son for protection. He asks Vegeta to rule "New Vegeta," thus occupying our prince Saiya-jin and masking Paragas' true plan of universal domination.

Piccolo

Race: Namek

The Piccolo in the DBZ series is the sole offspring of Piccolo-Daimao from the original. Like his father, his intentions are evil. However, when a greater evil, Raditz, threatens the Earth, he turns to the side of good and helps Goku. He later trains Gohan, and the kid help Piccolo become a good, well-meaning person. Capable of regenerating body parts and manipulating his size and shape, Piccolo is a formidable fighter.

Pilaf

Race: Unknown

Greedy and Childish, Emperor Pilaf only wants one thing: to rule the world. Using his wealth, he creates machines and fortresses which he uses to find and safeguard the Dragon Balls. Although he does come very close on many occaisions, Pilaf never is able to get his wish granted to become ruler of the Earth.

Mr. Popo

Race: Genie

Mr. Popo is Kami's best friend and assistant. Although he does not look like much, he is a powerful fighter. He wears a white turban with an oval shaped gem in the center, and travels sometimes by means of flying carpet or teleportation.He is also Immortal.

Puar

Race: Animal

Yamcha's pet and close friend, Puar aids him in robbing people that cross their desert. Unlike Oolong, who can only shape-shift for 5 minutes, Puar can change for as long as he wants (He graduated shape-shifting school). Like Oolong however, his power does not increase when he has changed into another form. Even with the ability to fly (another skill Oolong lacks), Puar is normally just on the sidelines when a fight breaks out.

Agent Purple

Race: Human

A master at the martial arts, Agent Purple faces Goku in the Muscle Tower. He has an enormous pornography collection, rivaling Kame-sennin for the crown of world's most perverted man. He uses many tricks in battle, and hardly ever fights face to face.

Mr. Satan

Sporting a large fro, Mr. Satan is the strongest man on Earth who cannot manipulate ki. After taking credit for defeating Cell, he becomes an international sensation (Although we all know that Goku is the true hero). A coward by nature, Mr. Satan relies on his luck and loads of money to defeat his opponents.He act like a big wuss and somehow make himself look good He has a single daughter named Videl, who becomes much stronger than her father.

Shu

Race: Animal

Another of Pilaf's servants, Shu dresses up in a ninja costume and aids Mai when she is given a task. He looks as tame as he fights, and often times he foils Pilaf's plans.

Slug

Race: Namek

Slug was the main villain in Dragonball Z movie four. Slug is a Super Namek. Unlike Piccolo, his evil side continued to grow, while his good side stopped growing when they split. Slug's good side disappeared and there was only evil. Slug originally is very old, but he collects the Dragonballs and wishes to be young again. When he takes some damage from the Z warriors, he reveals alternate form. He becomes a giant Namek, who is about the size of an Oozaru (were-formed Saiyajin).