Question: Peter Venkman was a character portrayed by which American actor and comedian?

Context paragraphs:
Egon Spengler: Egon Spengler, PhD is a fictional character from the "Ghostbusters" franchise.  He appears in the films "Ghostbusters" and "Ghostbusters II", in the animated television series "The Real Ghostbusters" and "Extreme Ghostbusters", in the video games "" and Beeline's "Ghostbusters".  Spengler was portrayed by Harold Ramis in the films and voiced by him in "" and "Lego Dimensions", and voiced by Maurice LaMarche in the cartoon series.  He is a member of the Ghostbusters and one of the three doctors of parapsychology, along with Dr. Peter Venkman and Dr. Ray Stantz.

Brüno Gehard: Brüno Gehard (] ; sometimes spelled "Bruno" or "Brueno") is a retired satirical fictional character portrayed by British comedian Sacha Baron Cohen.  A flamboyantly gay Austrian fashion reporter, Brüno first appeared during short sketches on The Paramount Comedy Channel in 1998, before reappearing on "Da Ali G Show".  Following the success of "Ali G Indahouse" and "Borat", Universal Studios gained rights to produce and release a feature film, "Brüno".  Along with Baron Cohen's other character, Borat, Brüno has been retired.

Bill Murray: William James Murray (born September 21, 1950) is an American actor, comedian, and writer.  He first gained exposure on "Saturday Night Live", a series of performances that earned him his first Emmy Award, and later starred in comedy films—including "Meatballs" (1979), "Caddyshack" (1980), "Stripes" (1981), "Tootsie" (1982), "Ghostbusters" (1984), "Scrooged" (1988), "Ghostbusters II" (1989), "What About Bob? " (1991), and "Groundhog Day" (1993).  He also co-directed "Quick Change" (1990).

Alan Partridge: Alan Gordon Partridge is a fictional character portrayed by English actor and comedian Steve Coogan.  A parody of British television personalities, Partridge is a tactless and inept television and radio presenter who often insults his guests and whose inflated sense of celebrity drives him to treachery and shameless self-promotion.  Coogan described Partridge as a Little Englander, with right-wing values and poor taste.

Peter Venkman: Peter Venkman, Ph.D., is a fictional character from the "Ghostbusters" franchise.  He appears in the films "Ghostbusters" and "Ghostbusters II" and in the animated television series "The Real Ghostbusters".  In both live action films, he was portrayed by Bill Murray, and was voiced in the animated series first by Lorenzo Music and then by Dave Coulier.  He is a parapsychologist and the leader of the Ghostbusters.

Ray Stantz: Raymond "Ray" 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), the animated television series "The Real Ghostbusters" and "Extreme Ghostbusters", and the video games Beeline's "Ghostbusters" and "".  He was portrayed by Dan Aykroyd in both 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.  Dan Aykroyd has a cameo appearance in "Ghostbusters" (2016) as "Cabbie".

Venkman: Venkman is the JavaScript debugger component of the Mozilla Application Suite.  It is also available as a Mozilla Firefox extension.  Venkman is named after the character Dr. Peter Venkman, played by Bill Murray in the movies "Ghostbusters" and "Ghostbusters II".

Fred G. Sanford: Fred G. Sanford is a fictional character portrayed by actor/comedian Redd Foxx on the 1972–1977 NBC sitcom "Sanford and Son" and the 1980–1981 NBC sitcom "Sanford".

The Real Ghostbusters: The Real Ghostbusters is an American animated television series, a spinoff of the 1984 comedy movie "Ghostbusters".  The series ran from September 13, 1986 to October 5, 1991, and was produced by Columbia Pictures Television, DiC Enterprises, and Coca-Cola Telecommunications.  J. Michael Straczynski was story editor, and wrote episodes for every season except four and seven.  "The Real" was added to the title after a dispute with Filmation and its Ghost Busters properties.  The series continues the adventures of paranormal investigators Dr. Peter Venkman, Dr. Egon Spengler, Dr. Ray Stantz, Winston Zeddemore, their secretary Janine Melnitz and their mascot ghost Slimer.

Lorenzo Music: Gerald David "Lorenzo" Music (May 2, 1937 – August 4, 2001) was an American actor, voice actor, writer, producer and musician.  His best-known roles include voicing the animated cartoon cat Garfield, and Carlton the doorman on the CBS sitcom "Rhoda".  He is also known for his work as Tummi Gummi in "Disney's Adventures of the Gummi Bears", the original voice of Peter Venkman in DIC's "The Real Ghostbusters", and Larry the Crash Test Dummy in a series of United States Department of Transportation public service announcements that promoted the use of seat belts from 1985 to 1998.

Supporting paragraphs: Peter Venkman Bill Murray
Answer: William James Murray