- In 2003, a novelization of the film was released under the name "Bumpy's 1st Movie: The Junior Novelization."
- In rough storyboards for the movie (viewable here), Francis and Bumpy unties Mac and Nuthead. In the final film, Dingo unties Mac and Nuthead.
- There are two online games based on this movie called Crush The Clones Game and Bumpy's 1st Movie: The 3D Game.
- The Bumpy's 1st Movie novel that was marketed during the film's marketing campaign had content altered from it, as well as rewording certain dialogues that was considered too intense for young readers.
- In a deleted scene, during Bumpy's awakening in the haunted house, he asks for "a kiss from his mommy." This rejected line was used in The Bumpy's 1st Movie novel.
- One deleted scene shows a close-up of Betty's ghost tail.
- There is also a video game based on this film.
- In a DVD commentary, the voice of Betty mentioned that there was a deleted scene where Mac would be forced to eat a pill while he was kidnapped to calm down, which would go into a drug-trip scene. However, no proof shows that this was a real deleted scene.
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