Upside Mystery Legacy/Trivia


 * The first franchise by MGM Animation Studios to have four films.
 * The fourth sequel by MGM Animation Studios released in the 2020s after Swan Dream Pool: The Magic Trails, The Addams Family 2, and Dusk and Dawn: A Zodiacal Night.
 * The first MGM Animation Studios film to be released in July.
 * The eleventh MGM animated movie to be presented in 2.35:1 aspect ratio after The Forests Between Mountains, Drilling Pursuit, Swan Dream Pool, Saturn, The Mansion Warrior, Saint College, Sherlock Gnomes, Swan Dream Pool: The Magic Trails, Dusk and Dawn: A Zodiacal Night, and Hailey.