She made her debut in "Back Out There", where she was shown doing karate, which, according to Clyde, has a similar personality to Ronnie Anne, because they both love karate. Later, Clyde wanted Lincoln to spend time with her, because it will remind him of Ronnie Anne. But when he entered the dojo, the girl thought he wanted to spar with her and attacked him without warning.
She's a fit girl with a blackish brunette ponytail as big as her head and three pairs of eyelashes. She wears golden pearl earrings and a white karate gi.
In "Pasture Bedtime", she wears a blue tank top and has a butterfly tattoo on her left wrist.
She is voiced by Jessica DiCicco, making Karate Girl another tough, sporty girl that she's voiced on the show besides Lynn.