The 13 Ghosts of Scooby-Doo

It's a Wonderful Scoob (1x9)

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After a confrontation with Time Slime which results in Scooby reliving memories of ghosts from the past, Scoob decides that he's done with the ghost-chasing business. The gang decides to replace him, so they hold auditions and Flim-Flam decides on casting the lovable, lazy puppy Bernie Gumshire. But hapless Bernie is no help when Time Slime captures the gang. It's up to Vincent Van Ghoul to pay Scooby a visit and show him what the future will be like if Time Slime defeats his friends in this send-up of It's a Wonderful Life.