GOKU
 -Race:Saiyan -How he became Super Saiyan: Freeza Killed his best friend Krillin.
              -How he became Super Saiyan 2: Training in paradice.
              -How he became Super Saiyan 3: Learned it while in paradice.
 
 -Relatives -Bardock:Father
            -Raditz:Brother
            -Chi Chi:Wife
            -Gohan:Son
            -Goten:Son
            
 -Short Bio -The main character of Dbz, started off as a little boy in the
            begining of the anime, but when the anime ended he was a grand fater.
            The anime is mostly based on him.

Piccolo
 -Race:Namek

 -Relatives -Kami:The good half of him.

 -Short Bio -Started off as an bad guy but then turned good, he 
            then re-united with his good side Kami, to become more powerful.

Gohan
 -Race:Human/Saiyan -How he became Super Saiyan: Training with his father.
                    -How He became Super Saiyan 2: Seeing his friends get beat up by Cell jrs.
 
 -Relatives -Goku:Father
            -Chi Chi:Mother
            -Goten:Brother
            -Barcock:Grand Father
            -Raditz:Uncle
            -Ox King: Grand Father
            -Videl:Wife
            
 -Short Bio -The son of Goku and Chi Chi, Gohan posesses alot of 
             streght becuase he is half saiyan half human.

Krillin
 -Race:Human

 -Relatives -C18:Wife
            -Pan:Daughter

 -Short Bio -Probably the strogest human on earth Krillin trained
             with Goku ever since they were little kids, but at the end of the
             series he is not a big fighter.

Vegeta
 -Race:Saiyan -How he became Super Saiyan: Training for the arrival of the androids.
              -How He became Super Saiyan 2: Building his strenght.

 -Relative -Trunks:Son

 -Short Bio -Also started off as a bad guy, Vegeta is always trying
            to be stronger then Goku.

Trunks
 -Race:Human/Saiyan -How he reached Super Saiyan: Trained by his father.

 -Relatives -Vegeta:Father
            -Bulma:Mother

 -Short Bio -Trunks first comes in the anime as a teenager. He 
            travels back in time with a time machine to save
            Goku and his friends. He then comes back as a kid.

Goten
 -Race:Human/Saiyan -How he reached Super Saiyan:Training.
                    -How he reached Super Saiyan 2:Skiped this from.
                    -How He reached Super Saiyan 3:When he fused with trunks.

 -Relatives -Goku:Father
            -Chi Chi:Mother
            -Gohan:Brother
            -Ox King:Grand Father
            -Bardock:Grand Father
            -Raditz:Uncle

 -Short Bio -He is born late in the series and fusions with Trunks to try to defeat Boo.

Raditz
 -Race:Saiyan

 -Relatives -Bardock:Father
            -Goku:Brother
            -Gohan:Nefue
            -Goten:Nefue

 -Short Bio -The first saiyan (excluding goku) to come to earth, he tells his 
             brother about the saiyan race and why Goku was sent to earth.

Napa
 -Race:Saiyan

 -Relatives N/A

 -Short Bio -Comes to earth with Vegeta, but Vegeta kills him 
            because he is too weak.