You were a Saiyan kid who didn't have any parents. They both died as well as the rest of your family when Frieza blew up Planet Vegeta. Now you live on Earth with Goku and the rest of his friends.

While Goku and his friends went to fight Baby, you were at home when you hear your doorbell. You get up from the couch and open the door, revealing Bulma but... something's different. She wore a black bodysuit and the shine in her eyes were gone.

"Wretched Saiyan kid. You will assist me in helping Baby defeat Goku. I can... persuade you to help, if I must."

She takes off her high heels, revealing her perfect bare feet.