1x7 - The Scooby-Doo/Dynomutt Hour

The Harum Scarum Sanitarium (Scooby Doo):Going to Niagara Falls the gang ends up staying at an asylum being haunted by the ghost of Dr. Coffin. His two henchmen seem to be driving an ambulance taking patients, but are they really patients or are they hiding something? Don't Bug Superthug (Dynomutt): The superhero group are after a group of evil geniuses, Superthug and Zorkon. Superthug steals everything steel in the Big City to build a super dynamic steel skeleton.