Peggy Sue (a.k.a Peggie Sue) is a green female humanoid alien who appears in the Planet 51 video game. She appears at the beginning of the race missions when a player is ready to race. She is also a playable character who can be unlocked if the "Looking for Rover" mission is completed. However, she is only playable in multiplayer mode.
She also appears in the Planet 51 movie, as background character, with a design somewhat similar to that of the game. However, she has little to no lines in the movie.
- The "Looking for Base 9" mission is the only race mission Peggy didn't appear in.
- Even though her voice actor in the game is unknown, her voice sounds somewhat simalir to Audrey from Regular Show.