Slimer made his debut in Kids World's Adventures of Ghostbusters. Ryan and the gang saw him at the Sedgewick Hotel. He got captured by the team. Later, Walter Peck shut down the containment unit freeing Slimer. Slimer was named "Slimer" by Mewtwo, just to annoy Rabbit. Kids World's Adventures of Scooby-Doo and the Witch's Ghost reveals that, although he was a former servant to Gozer and the Terror Dogs, he wasn't able to detect any evil from Ben Ravencroft. Mostly due to lures of food, as usual.