In the introduction on The Real Ghostbusters Complete Collection, Dan Riba revealed he was a storyboard artist and character designer on this episode.
Peter's favorite show is revealed to be "The Bob Newhart Show". Lorenzo Music, the voice of Peter Venkman, co-created "The Bob Newhart Show."
The voice actors were recorded on January 9 and 16, 1987. Victor, the Happy Ghost (1987) recorded on January 16, 1987.
This marks one of the few episodes in which a ghost escapes from a trap. It is the only episode in which two separate ghosts escape from a trap (Victor and Slimer).
One of the few episodes in which Slimer is trapped.