Peter Venkman is one of the members of the Ghostbusters team whom has been with the franchise since right from the start. Peter is one of the 3 Parapsychologists in the Ghostbusters team who has a Ph. D in Psychology and Parapsychology however despite the fact that he is now known as a Ghostbuster he originally didn't believe in Ghosts until he has actually seen them. But still Peter is still very much a cynic with a highly sarcastic sense of humor who is also a bit of a shameless womanizer as well but he is a classic example of Jerk with a hidden heart of gold. However while Peter does have quite a lackadaisical attitude he is a genuinely capable scientist much like Ray Stantz and Egon Spengler but he does have considerably better social skills than those two (even though his various personality quirks have gotten him into trouble more than once).