Watch Slimer! And the Real Ghostbusters (1988–1990) full episodes online cartoons.
Synopsis: An animated series loosely based on the movie “Ghostbusters” and the TV series “The Real Ghostbusters”. In this series, the Ghostbusters are still running their supernatural pest control business, but with some new additions to the staff, particularly Slimer. Formerly a minor sidekick, the little green ghost is now a primary character with many episodes revolving around his adventures.
Stars: Frank Welker, Jeff Altman, Dave Coulier
Sources: IMDB, Wikipedia