Egon Spengler portraying the character other than to follow Ramis's example. He got the part anyway and said in an interview that he did two different takes: in which he impersonated Ramis, the other in which he tried a more "Woody Allen"-like approach that did not suit the character's physicality, he admitted. Egon Spengler is a tall, laconic, bespectacled, awkward member of the team responsible for the main theoretical framework for their paranormal/quantum studies. Being addicted to science, he is the creator of the Ghostbusters' equipment along with Raymond Stantz, thus making him the brains of the Ghostbusters. Although book smart, Spengler
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.