The characters have appeared in other Hanna-Barbera cartoons, including Scooby's All-Star Laff-A-Lympics and Yogi's Treasure Hunt.

Snooper's voice was patterned after Ed Gardner's Archie on the 1940s radio show Duffy's Tavern.

Also, Snooper makes frequent contact with his agent Hazel who is never shown, but is revealed to have a Parakeet as a pet.

[5] In the mid-1960s, Snooper and Blabber were the stars of two LP albums from Hanna-Barbera Records: In the Robot Chicken season 3 episode "Ban on the Fun", Snooper and Blabber appear in the "Laff-A-Munich" skit, confronting the Great Fondoo who was holding the groceries after the Really Rottens have murdered the majority of the Yogi Yahooeys.

However, the Great Fondoo questions why HE is there, stating he is a nobody and that Hanna-Barbera should've had plenty of other villains to make up the Really Rottens.