Miss Loon is the school's creative writing teacher. She first appeared in "Shiny Thing". She is voiced by Cree Summer.
- Her character is an allusion to Katharine Hepburn, who played loon-loving Ethel Thayer in On Golden Pond.
- In "The Ivy League", it was admitted that she's actually a blue jay, despite what her last name is, because there are no blue loons.