Dan Fluunk was the caretaker at Burlington Library.
He is a bald, middle-aged African American male.
His nice, cheerful, and inviting personality conceals his insanity he has grown from being in the library ever since he was born.
Scooby-Doo! Mystery Incorporated
He dressed as an Anubis masked creature and used terror wood to scare everyone away from the library so it could finally close, and he could move someplace warm. However, once he was caught he appeared to be insanely happy about going to prison because he would finally be someplace warm.
He was among some of the culprits Mystery Inc. had unmasked, serving time in prison.