|This needs a stretch.|
Needed: Physical appearance.
The bank was managed by Mr. Carswell.
Insert details here.
Scooby-Doo, Where Are You!
At the end of the day when he was the last one left, Mr. Carswell would steal from the safe; while at night he would return and then leave as the Creeper with a briefcase making it look like the latter had stolen from the bank. What he didn't know was that the guard had set up an infra-red security camera, providing evidence that Mr. Carswell was embezzling money from his bank.
- While it's not explicitly confirmed, the bank could be retconned into being situated in the home town of the gang, as established in A Pup Named Scooby-Doo.