Katie is a 12 year old girl with Saiyan DNA .
Katie has black hair. She wears a black shirt that has a skull and crossbones on it. Katie also wears a black skirt and black sneakers along with the shirt.
Katie is a cheerful, happy, and kind girl.
Katie was on her way to school, when she was suddenly captured by Dr Gero and, who injects her with Saiyan DNA that was taken from Gohan. When her father ask where did she had gotten her powers but Katie wouldn't tell. So he decided to tickle her in the stomach to make her speak. When Katie finally reveals how she got her powers, he locks Katie in her room and has her shackled to a chair. But Katie runs away and never comes back. Videl goes on to search for her, with Android 18 also helping to search for Katie. Dr Gero held Katie captive in a warehouse. Android 18 faces him and ends up getting paralyzed by the Dowa Gas as Dr Gero pinned her to the wall. Katie went to battle Dr Gero and defeats him. Katie returns home, and Android 18 also went home.