A circus ape appears in Scooby-Doo Meets the Boo Brothers. He was thought for a time to be the ghost of an ape Shaggy Rogers' Uncle Beauregard had shot, but he turned out to be a real gorilla who escaped from a derailed circus train.
After the ape found Uncle Beauregard's mansion after leaving a derailed circus train, his presence provided a perfect excuse for T.J. Buzby to snoop around the premises. Resembling an ape Uncle Beauregard had shot and stuffed, the circus ape was briefly thought to be that ape's ghost haunting the manor, joining Buzby's personas of the Skull Ghost and Beauregard's Ghost, and the ghost-hunting trio The Boo Brothers, to the mansion's fighting collection.
Growing a fondness for Scooby-Doo and being thankful toward Scrappy-Doo for considering his fear around a ghost-filled estate, the ape assisted the trio several times in their search for Uncle Beauregard's treasure.