Miss Loon is the school's creative writing teacher. She first appeared in "Shiny Thing". She is voiced by Cree Summer.
- Shiny Thing
- Guano in 60 Seconds
- Le Switcheroo (Non-Speaking Cameo)
- Poop Scoop (Cameo)
- Substitute Sweetheart (Mentioned)
- The Ivy League (Mentioned)
- A Very Special Boy (Non-Speaking Cameo)
- 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.