Ray Stantz

Raymond "Ray" Stantz, Ph.D. is a fictional character from the "Ghostbusters" franchise. He appears in the movies "Ghostbusters", "Ghostbusters II", "Casper", and the animated television series "The Real Ghostbusters". 
In both live action movies, he was portrayed by Dan Aykroyd, and was voiced by Frank Welker. He is a member of the Ghostbusters and one of the three doctors of parapsychology, along with Dr. Peter Venkman and Dr. Egon Spengler.