Bloom's Adventures of Scooby-Doo on Zombie Island is the very first Winx Club/Scooby-Doo crossover film planned to be made by RatiganRules. it is unknown when it will be made
Bloom, Stella, Flora, Musa, Tecna, and Layla (along with SpongeBob and Patrick) teamed up with Scooby-Doo, Shaggy, Daphne, Fred, and Velma for the first time. Together they are going to a mysterious place called Sombie Island and solve a scary mystery. Scooby-Doo and the gang will soon face the Winx Club's arch enemy: Lord Darkar!
- SpongeBob SquarePants, Patrick Star, and Lord Darkar will guest star in this film.
- The werecats will be working for Lord Darkar in this film.
- SpongeBob and Patrick have met Scooby-Doo and the gang before in SpongeBob's Adventures of The Goonies.
- SpongeBob and Patrick were originally planned to guest star in yru17's Land Before Time/Scooby-Doo movie, but found out that RatiganRules was already planning to guest star them in his Winx Club/Scooby-Doo movies starting with this movie. So, yru17 decided to cut SpongeBob and Patrick from his Land Before Time-Scooby-Doo movies, just to avoid confussion or plagiarism.
- SpongeBob and Patrick will see Scooby-Doo and the gang again in Winnie the Pooh Says Hocus Pocus.