Fortunately, Ghostbusters: Afterlife was everything ... Garraka gets the most use out of the Possessor ghost and while the Possessor is a cool concept, it doesn't have a physical manifestation.

"The stakes are much higher than we've had in a Ghostbusters ... by the possessor ghosts in our library sequence. Arjen Tuiten, who created Slimer's puppet and the librarian ghost puppet for ...

Writer-director Gil Kenan tells EW that "the choreography of that character was some of the most hilarious" he's seen. Warning: This article contains spoilers for Ghostbusters: Frozen Empire.