Saiya-jin Pride
Goku - He is the son of Bardock(his mother is not known) and is sent to earth to destroy it, however he is raised(adopted) by Grandpa Gohan. He is first shown in the original Dragonball series catching a fish. He is the protaganist(hero) in the entire seris of Dragonball, Dragonallz, and Dragonball Grand Tour.
Bulma - Bulma is first introduced during the first episode on Dragonball. She is a teenager and is much older than Goku, but is still considered a child. During Dragonball she is real open and expressive(she shows her "stuff" quite a bit). She is the daughter of Mr. and Mrs. Briefs.
Krillin - Krillin is also introduced as a child during Dragonball. At firs he and Goku were enemies, but later on They are trained by Master Roshi. He also competes in the Techakai Buduokai during Dragonball.
Gohan - Gohan is the son of Goku and ChiChi, he is introduced during the first episode of DBZ as a small child...but with hidden and intense power for someone his age. As a child he battles Radditz, Vegeta, Furiza, and Cell. During the Buu saga he is already grown up and not considered a child anymore.
Trunks - Trunks was born during the period after Future Trunks warned the warriors about the impending doom with the Androids, and before the Androids arrive. He is only a small child in the Cell saga so he has no major role, until he is seven years old during the majin buu saga. He fights Goten in the Tenchakai Budoukai, and fuses with Goten to become Gotenks to fight Majin Buu. His parents are Bulma and Vegeta.
Goten - Was born during DBZ, but is not shown until he is six years old, as Gohan's brother. His parents are Goku and ChiChi. His story is the same as Trunks, except he is younger then trunks and not quite as strong.
Marron - Marron is the daughter of Android #18 and Krillin. She is a baby during the buu saga so she dosnt do much, in DBGT she is older, but plays a little role.
Ubuu - Ubuu is first during the last couple of episodes of Dragonballz. He is in the tournament to win money for his family that is poor. In reality Ubuu is the reincarnation of Majin Buu..except he is good and not evil. Goku made this wish for Buu to be reincarnated so he can train with someone since Buu was his strongest opponent. During the tournament Goku and Ubuu fight and Goku starts to make fun of him, which brings out his anger and a good fight starts to take place. Goku stops the fight as takes Ubuu to go train. Ubuu is part of DBGT and helps in the fight against Bebi Vegeta.
Pan - Pan is the daughter of Gohan and Videl. She is a strong fighter and is used alot during DBGT. She is later shown during the last ever episodes as the Great Grandmother of Goku Jr.
Bra - Bra is the daughter of Vegeta and Bulma. She is part of the late DBZ, and DBGT. She is exactly like Bulma, and never fights. Although she does get posses by Bebi.
Goku Jr. - Goku Jr. parents aren't known, but he is the great grandson of Pan. Even though he is far from being a pure Saiyan, he is able to turn into a Super Saiyan easily. He is in the last episode of DBGT and is figthing Vegeta Jr. in the Technakai Budokuai.
Vegeta Jr. - Vegeta Jr.'s parents aren't known, but he is cable of being a super saiyan and battles Goku jr in the Techanaki Budokai.