Slimer

Slimer
Ghostbusters character
Slimer in Ghostbusters (2016)
First appearance	Ghostbusters (1984)
Last appearance	Ghostbusters: Answer the Call (2016)
Created by	Dan Aykroyd, Harold Ramis
Voiced by	Ivan Reitman (Ghostbusters I & II) Adam Ray (Ghostbusters: Answer the Call) Frank Welker (The Real Ghostbusters) Billy West (Extreme Ghostbusters) Troy Baker (Ghostbusters: The Video Game)
Information
Nickname(s)	Slimer
Species	Ghost
Gender	Male
Title	Focused, Non-Terminal Repeating Phantasm Class 5 Full Roaming Vapor
Spouse(s)	Lady Slimer (2016 film)
Nationality	American

Slimer is a character from the Ghostbusters franchise. He appears in the films Ghostbusters (1984), Ghostbusters II (1989) and Ghostbusters: Answer the Call (2016), in the animated television series The Real Ghostbusters, Slimer! and Extreme Ghostbusters, and in the video games Ghostbusters: The Video Game and Beeline's Ghostbusters. Slimer was voiced by Ivan Reitman and Adam Ray in the films and by Frank Welker in the cartoon series. In The Real Ghostbusters, he is the Ghostbusters' mascot.

During the pre-production of Ghostbusters, Ivan Reitman remarked Slimer was sort of like Bluto in the film Animal House, like the ghost of John Belushi. Since then, Slimer has been described as "The Ghost of John Belushi" by Dan Aykroyd in many interviews.

In the script for Ghostbusters, Slimer is never actually called by any name, so is never given one. The creature's original moniker was simply "The Onionhead Ghost", which the film crew semi-officially dubbed him because of the horrible odor which he uses to scare a couple in a scene cut from the original movie. In early drafts, Slimer was vaguely described as an 'incredibly foul-smelling amorphous vapor'. In July 1983, the final design came along and the 'green, potato-shape' was incorporated into the script. In total, three large scale Onionhead ghosts were created, each with a different expression and/or task. One was for smiling, one was for looking scared, and one was for drinking. A miniature was made for long shots of it flying around the hotel chandelier but it wasn't used. The Onionhead form was cast in the form of a foam latex suit but actual expressions were done with cable mechanisms.