She is the queen of Planet Crayon, the home of Big Bird's friend Tee Hee. The vain Queen considers herself the yellowest of them all, until she learns of the existence of Big Bird on Sesame Street. She flies to Earth with Tee Hee to confirm the claim. Anxious to fell her perceived rival, she first puts Big Bird to sleep and then plots to put purple polka dots all over him. The plan backfires and she ends up with polka dots on herself. However, the Amazing Mumford quickly changes her back to her yellow self with one of his magic tricks. The Queen learns a lesson about jealousy and returns to her planet as a wiser ruler.