Monster Mash (2000)

Drac, Frank, & Wolf were the scariest monsters around, until they became associated with fun and other things happening like Drac no longer having his fangs and Wolf going bald. They end up summoned by the Superior Court of Horrors, where the judge orders them to prove that they are still scary by the end of 24 hours or they will be sentenced to an eternity entertaining at children's parties. Drac, Frank, and Wolf are assigned to scare the Tinklemeister family.

The Tinklemeisters soon end up assisting Drac, Frank, & Wolf into proving that they are still scary, even when the Grim Reaper Prosecutor sends three new monsters-Freddie de Spaghetti: King of Carbohydrates, Chicky the Doll of Destruction & the Alien Eater-to make sure that they all fail in their mission.