Government agent (The Spirits of '76)

The government agent is an investigator of federal crimes.

Season one
He was watching the gang of criminals that was trying to bore into the U.S. Mint and steal freshly-printed money. When the case was closed, he pointed out the bills were incompletely printed, making them worthless.

Appearances

 * The Scooby-Doo Show
 * The Spirits of '76