Ghostbusters franchise, which includes a 1989 sequel, "Ghostbusters II", two animated television series, "The Real Ghostbusters" and "Extreme Ghostbusters", several video games, and a 2016 reboot film. Peter Venkman, Raymond Stantz, and Egon Spengler are scientists investigating the paranormal at Columbia University. After they lose their jobs following a botched ghost investigation in the University library, they establish Ghostbusters, a paranormal investigation and elimination service. They open their business in a disused firehouse and develop high-tech equipment to capture ghosts. On their first call, at a hotel, Egon warns the group never to cross the energy streams of their proton pack
Egon Spengler intellect switched with Slimer's. He has however, ceased his sugar junkie ways, only to briefly be tempted by a candy store when in Slimer's body (a likely fact that Slimer was an overt glutton). It is revealed in "The Boogieman Cometh" that, as a child, Spengler was stalked by the boogieman, a supernatural monster that fed on the fear of children and hid in their closets, and was particularly fond of Spengler's fear; it was these encounters with the creature that inspired Spengler to study the paranormal, and as an adult, he would battle the Boogieman twice and defeat him.