– Donald Alan Oppenheimer – Morris P. Grout, Goolem John Stocker – Stay Puft Marshmallow Man (Season 3) Cree Summer – Chilly Cooper, Mrs. Stone Episodes Production At the same time The Real Ghostbusters was being created, Filmation was making a cartoon revamp (Ghostbusters) of their 1975 live action series The Ghost Busters, due to disagreements with Columbia over animation rights. A short pilot episode was produced, but never aired in full. The full 4-minute promo was released on Time Life's DVD set in 2008. Scenes of the pilot can be seen in TV promos that aired prior to the beginning of the series. Among differences seen in the promo pilot, the Ghostbusters wore beige jumpsuits as in the film and the character design for Peter Venkman bore more of a resemblance to actor Bill Murray. The character designs by Jim McDermott were dramatically different, with color-coded jumpsuits for each character. When he auditioned for the voice of Egon Spengler, Maurice LaMarche noted that while he was asked not to impersonate Harold Ramis, he did so anyway and eventually got the part. LaMarche also noted that Bill Murray had remarked off-handedly to producers that Lorenzo Music's voice of Peter Venkman sounded more like Garfield (who was also voiced by Music at the time). Bill Murray went on to voice Garfield in Garfield: The Movie and its sequel in the 2000s after Music died in 2001. A different explanation for the change of actor for Peter Venkman came from Dave Coulier, who took over the role of Venkman from Music, who explained that Joe Medjuck, a producer on both the original 1984 film and the animated series, wanted the character to sound more like Bill Murray. Ernie Hudson was the only actor from the films who auditioned to play his character in the series; however, the role was given to Arsenio Hall and later Buster Jones. Although the Ghostbusters concept was tinkered with, the finalized show does feature many tie-ins from the films. In the season 1 episode "Take Two", the Ghostbusters fly to Hollywood to visit the set of a movie based on their adventures, which is revealed to be the 1984 movie at the end of the episode. The Stay Puft Marshmallow Man makes numerous appearances. During the third season, Walter Peck, the Environmental Protection Agency antagonist from the original film, reappears. The uniforms and containment unit are redesigned,