"Happy Rotter" is a book series read by the characters on the show. It is a parody of the "Harry Potter" book series, which are written by J. K. Rowling.
The plot of the Happy Rotter series is about a young wizard boy named Happy Rotter who attends a wizarding school with his friends Red and Morpione, and faces off against the evil dark wizard Voldemob who killed his parents.
- Happy Rotter, a wizard boy whose parents were killed when he was a baby. He is a parody of Harry Potter.
- Morpione, Happy's girlfriend, who is a parody of Hermione Granger. In the Happy Rotter series, she is Happy's girlfriend, but in the original Harry Potter series, Hermione is Ron's girlfriend.
- Red, Happy's best friend, who is a parody of Ron Weasley.
- Voldemob, an evil dark wizard who is a parody of Voldemort.