Pan
Race: Three Quarters Human, One Quarter Saiyajin
Eyes: Brown
Hair: Black
Abilities: Bukujutsu, Kame Hame Ha, Zanzoken
Weapons: None
Series: DBZ, DBGT
Pan, also known as Pan-Chan, is Goku's granddaughter. She is the most powerful female in all of Dragonball. Pan makes her first appearance in the first episode of Dragonball GT, she is about 11 or so. Pan is 1/4 Sayain, and she is Gohan and Videl's daughter. Pan gets her name, Pan-Chan, because "chan" in Japanese means "cute", as in young. She does not seem to resent the name. Pan also refuses to refer to Trunks as Trunks-san ("san" is a Japanese suffix of respect for elders). Pan is also very adventurous, and can get into trouble, usually with Trunks and Goten. Goten, Trunks, and Pan go everywhere together, she is almost like the little sister they never had.
Piccolo
Race: Namek
Eyes: Black
Hair: None
Abilities: Bukujutsu, Chonoryoku, Energy Dan, Eye Lazers, Kakusanyudokodan, Kyodaika, Makankosappo, Regeneration, Renzoku Energy Dan, Merging, Shogekiha, Tsuihidan, Zanzoken
Weapons: None
Series: DB, DBZ, DBGT
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 becomes the only person that Piccolo cares for. Capable of regenerating body parts and manipulating his size and shape, Piccolo is a formidable fighter.
Tenshinhan
Race: Unknown
Eyes: Black
Hair: Black (Shaved)
Abilities: Bukujutsu, Dodonpa, Kame Hame Ha, Kiai, Kikoho, Mafuba, Shiyoken, Taiyoken, Zanzoken
Weapons: None
Series: DB, DBZ, DBGT
Tenshinhan, also known as Tien, is an Earthling warrior. He is about Goku's height and pretty muscular. Tien also has three eyes, two normal eyes, and then one stranger looking eye on the top of his head. Tien is good friends with Chao-Zu, he is also his bodyguard. Tien is the developer of the technique known as the Solar Flare (a fantasically bright like that is formed by fanning one's hands across their face). The "three-eyed man", even though he is not shown often, still plays a decent roll in DragonBallZ.
Trunks
Race: Half Saiyajin, Half Human
Eyes: Purple
Hair: Purple
Abilities: Bukujutsu, Burning Attack, Fusion, Kame Hame Ha, SSJ, SSJ2, Zanzoken
Weapons: Sword
Series: DBZ, DBGT
Trunks is the first child of Vegeta and Bulma. There are two Trunks in the DB universe. "Future Trunks" comes from a parallel universe 14 years in the future where evil androids rule the Earth. He goes back in time after the death of Freeza to prepare the Z warriors for the androids' arrival. So as not to prevent his own birth, he tells no one of his heritage, except Goku. "Chibi Trunks" is born after Future Trunks returns to his own time. He likes to hang out with Goten and they are very good friends. When he and Goten are together, Trunks has a tendency to get them in trouble. Trunks is also sad that he does not have a brother like Goten does (Gohan). Trunks has purple hair and displays extreme levels of power, Trunks reached Super Saiyajin when he was eight. Despite Trunks' ability to get Goten and himself in trouble, he means well.
Vegeta
Race: Saiyajin
Eyes: Black
Hair: Black
Abilities: Big Bang Attack, Bukujutsu, Fusion, Galick-Ho, Kienzan, Oozaru, SSJ, USSJ, SSJ2, SSJ4, Zanzoken
Weapons: None
Series: DBZ, DBGT
Born on the planet bearing his own name, Vegeta has the bloodline to become a super-elite Saiyajin. A henchman of Freeza, he is regarded as one of the greatest fighters in the universe. Along with Goku, Radditz, and Nappa, Vegeta is one of the only Saiyajins to survive the destruction of their homeworld. He is extremely jealous of Goku's superior fighting ability, and actually helps him from time to time so that he still has someone to compete with. Vegeta craves nothing more then ultimate power.
Videl
Race: Human
Eyes: Blue
Hair: Black
Abilities: Bukujutsu
Weapons: None
Series: DBZ, DBGT
Videl is Gohan's girlfriend and assistant and is also in the same high school class as Gohan. Gohan taught Videl how to fly and fight, but she cannot manipulate energy. Chi-Chi wants Videl to marry her son, and does not hide her intentions. Videl and Gohan everntually marry, and have a baby girl named Pan.
Yes, I know that I am missing a few people, but they will be added soon. Hopefully every character that appears in DB and has a substantial role will be on this page.