If you’re wondering how the crossover takes place, it begins with Dexter of Dexter’s Lab fame sending Dee Dee to Jellystone! to get her out of his hair. Ironically enough, Billy from The Grim ...
Jellystone as a series was always based in crossovers, specifically, the animated show brought together scores of Hanna Barbera characters including the likes of Yogi Bear, Huckleberry Hound, Top Cat, ...