| Ghost of Hamlet
The Ghost of Hamlet is meant to be the ghost of Hamlet's father that appears in the play, Hamlet.
The New Scooby-Doo Mysteries
It was the disguise of Yorick, the Castle Hamlet Hotel caretaker, trying to draw attention to the crimes of Rosey Crans and Gilly Stern. (Scoo-Be or Not Scoo-Be?)