Ren and Stimpy are two main characters of the Nicktoon The Ren & Stimpy Show.
- Ren and Stimpy will meet Winnie the Pooh, Ash Ketchum, Simba, Littlefoot, and their friends in Pooh's Adventures of The Ren & Stimpy Show and at the end of the first episode, they will join Yakko Warner's Pooh's Adventures team for future adventure.
- Ren and Stimpy might make their first guest appearance in a Land Before Time crossover in Littlefoot's Adventures of The Young Black Stallion.
- Ren and Stimpy might make their first guest appearance in a Dinosaur crossover in Aladar's Adventures of Scooby-Doo on Zombie Island.
- Ren and Stimpy will host the censored double feature with Ash Ketchum Meets Big Chest Buster and Ash Ketchum Gets Zerophilia.