Slimer was based off the film version of the character. The ghost's relationship to the team was that of a pet, a mascot, a test subject, and later a full member of the team.
The Real Ghostbusters (1986-1991)
Extreme Ghostbusters (1997)
- He was voiced by Frank Welker from Season 1 to 7.
- And Billy West from Extreme Ghostbusters.