Mr. Buckston was the bank president of the Coolsville Last National Bank.
Middle-aged man, brown hair, and black eyes.
Appears to be concerned about his bank being robbed, but really rather greedy when he throws himself off suspicion pinning on someone else.
A Pup Named Scooby-Doo
He dressed up as the Sludge Monster to scare Scooby-Doo so he could use his doghouse as a hideout for all the gold he stole from his bank and frame Mr. Williams the bank janitor. (The Sludge Monster From The Earth's Core)
"He would've taken the blame, if it weren't for you pesky kids."
-- Mr. Buckston