Kate Gillius aka Super Kate is the superheroine who is undefeated. She falls in love with King. She wears a similar costume to Ruby's superhero clothes but no cape. In her normal guise, she wears a black shirt, blue spendex shorts (short), black shoes. Her hairstyle is long. She is turned into a bubble guppy by Distille along with Susan Hurley, and the others. She stayed at age 15 due to fountain of youth.