Tonton Streaming Ghostbusters (1986) S1E57 - The Fourth Ghostbuster

The Ghostbusters offer Corky the position of honorary Ghostbuster. Unfortunately, this honor goes to his head and Corky steals the Ghost Buggy in order to hunt down ghosts and impress his friend. When the Ghostbusters realize that Corky and his friend are missing they pursue the pair to the Hauntquarters.