Raymond Stantz, PhD is a fictional character from the Ghostbusters franchise. He appears in the films Ghostbusters (1984), Ghostbusters II (1989), Casper (1995, as a cameo) and Ghostbusters: Afterlife (2021), the animated television series The Real Ghostbusters and Extreme Ghostbusters, and the video games Beeline's Ghostbusters and Ghostbusters: The Video Game. He was portrayed by Dan Aykroyd in all four live action films, and voiced by Frank Welker in the animated series. He is a member of the Ghostbusters and one of the three doctors of parapsychology, along with Dr. Peter Venkman and Dr. Egon Spengler.