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| Mr. Wiley
Mr. Wiley was a janitor at Coolsville High School, where the gang graduated.
He is a Caucasian male with gray hair.
Insert details here.
Scooby-Doo! (DC Comics)
He stole jewels and hid them in one of the school lockers. He dressed up as the High School Ghoul to scare kids out of looking in their lockers and finding the jewels before he did.