Before Slimer became a ghost, he had a rather intriguing backstory that was created by director Paul Feig and co-writer Katie Dippold. According to them, Slimer was actually a gangster in his previous life, and his afterlife began as a more traditional ghoul.
In this backstory, Slimer’s existence as a gangster was cut short when he was executed for a rather unusual reason. It turns out that Slimer had killed a waiter who had made a mistake with his order. This act of violence led to his demise and subsequent transformation into a ghost.
Initially, Slimer’s ghostly form resembled that of a typical ghoul, perhaps with a more menacing appearance than the friendly green blob we’ve come to know. However, his appearance took a drastic turn when the Ghostbusters were called to a restaurant that Slimer had been haunting.
It’s not entirely clear what happened during this encounter, but it resulted in Slimer being disfigured in some way. This disfigurement likely contributed to his unique appearance, with his bulging eyes, wide grin, and overall misshapen figure. It’s this disfigured form that has become iconic and synonymous with Slimer in the Ghostbusters franchise.
While this backstory provides an interesting glimpse into Slimer’s origins, it’s important to note that it may not be widely known or officially canon within the Ghostbusters universe. The details of Slimer’s past have often been left up to interpretation, allowing fans to form their own theories and ideas about his origins.
Before Slimer became a ghost, he was a gangster who was executed for killing a waiter who messed up his order. He began his afterlife as a more traditional ghoul but was later disfigured when the Ghostbusters encountered him at a haunted restaurant. However, it’s worth noting that this backstory may not be universally accepted within the Ghostbusters franchise.