The Scooby-Doo Show Season 1 Episode 2
The Fiesta Host is an Aztec Ghost (Sooby-Doo):
A Mexican vacation becomes a search for missing Aztec treasure for Scooby-Doo and the gang. The town of Cinco, supposed site of a gala fiesta, is deserted, what with its residents terrorized by a stone monster and the ghost of The Aztec God Of Contezuma. Searching for an ancient pyramid nearby, the gang find clues that lead them to a mysterious river barge and a cave where the treasure is being smuggled away.
What Now, Lowbrow? (Dynomutt):
Dog Wonder and B.F., teamed with the Scooby-Doo crimestoppers, meet Lowbrow, a villain desiring to be king of crime employing the knowledge from the books of Big City University to further his dastardly schemes. This primitive thief unwittingly leads Blue Falcon, Dynomutt and Scooby Doo and company to his lair, where they discover his latest plan: robbery of Big City Mint!
Serie: The Scooby-Doo Show
Episode Title: The Fiesta Host is an Aztec Ghost / What Now, Lowbrow?
Air Date: 1976-09-18