Ok some of these are written by me but thank webxt.com and dbhybrid for some of these.
GOKU
Goku,The main chrecter of the entire series,nearly saves everyone all the time in each series.He has a tail like his son and can turn into a monker or ozaru in japanese.Hes becomes the most powerful person in the universe.He always surpasses the person who is beating him.He reaches SSJ4 and fuses with vegeta to become ssj4 gogeta.
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TRUNKS
Trunks is the son of Vegeta and Bulma. Trunks has a good freind named Goten and they are best freinds. Trunks was like 7 or 8 and he became a Super Saiyan already. The World's Junior division( first time fighting in a tournament ) he won and became a champion. And there is another Trunks that came from the Future and he destroyed Freeza when Freeza came back to Earth for Goku. Mirai Trunks is from the Future and he is the one who helped the Z fighters from loosing Goku and helped telling them Androids were coming. Trunks helped them because he didn't want them to suffer like his time did.
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VEGETA
Vegeta might be the second strongest person in the universe. Vegeta is all about Pride. Vegeta has a bad temper and gets together with Bulma and gets married then gets a son named Trunks. Vegeta is introduced in Dragonball Z in the Saiyan Saga as a villan then sooner he become a good guy. And Vegeta is the oldest in the DBZ Gang. Later on Vegeta and Bulma get a daughter named Bra.
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Gohan
Gohan is Goku's and Chi-Chi's first son and is powerful too. When Gohan was at age 11 or 12 ( a Guess ) was the first one to turn Super Saiyan level 2 . Gohan's first trainer was Piccolo. Gohan is half human and half saiyan. Later on Gohan marries Videl and thats Hercule's Daughter. Gohan could of been the strongest fighter in the universe but his mom,Chi-Chi, made him study and barely got to train.
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GOTEN
Goten is the second son of Goku and Chi-Chi, so that makes Gohan his older brother. Goten is the youngest Super Saiyan at age like 5-7 and couldn't FLY. Goten's best freind is Trunks and the really went well as freinds. Goten was trained by his mother,Chi-Chi, and they trained during Gohan was studying. And when Goten and Chi-Chi trained one day Chi-Chi was beating Goten up until that made Goten mad and then turned Super Saiyan and kicked her. Next while Chi-Chi was sitting on the ground she looked at Goten, then she yelled,'' NOT ANOTHER MONSTER IN THE FAMILY!!"
