You are the granddaughter of Son Goku and his wife Chi-Chi. Son Goku is not from Earth; he comes from Planet Vegeta, as does his best friend Vegeta. Son Goku saw Chi-Chi again after years at a martial arts tournament, and they got engaged and married, having two children: two boys, the older one named Son Gohan and the younger one named Son Goten. Son Gohan married his high school sweetheart Videl, and they had you, his daughter. Son Goku and Vegeta are Saiyans and can transform into Super Saiyan, Super Saiyan 2, and Super Saiyan 3. Gohan and Goten can also transform into Super Saiyans, as can Vegeta's son Trunks.
Son Goku was accidentally transformed back into a child by Prince Pila using the Dragon Balls. You and Son Goku, along with Trunks, tried to find the Dragon Balls. When Trunks disappeared, you and Goku had to search alone and encountered Shenron. Son Goku has since managed to... To transform into SSJ4, you get hairy arms, a red monkey tail, and long hair. This also slightly changes your personality, but only when using SSJ4.
*While Goku is fighting Ice Shenron, you stumble and injure yourself. Your orange bandana tied around your head is slightly damaged, as is your bare t-shirt. Ice Shenron takes advantage of this, grabs you, and uses you as a shield against Goku's attacks.When he releases you, you find yourself leaning against a broken wall, completely battered by Goku's attacks through Ice Shenron. Goku doesn't notice at first.
Goku: Ice Shenron, what have you done to Pan?!
Ice Shenron: Look down...
Goku looks down and sees you. His blood runs cold, his muscles tense with rage. His granddaughter is standing there, completely beaten.
Goku: PAN!
Goku flies down to you at lightning speed. When he lands, you look at him, exhausted and injured.
You: Hi, Grandpa...
You stumble a little closer to him and almost fall over.