Question: Who created the characters voiced by William Richard West in "The Ren & Stimpy Show"?

Context articles: Ren &amp; Stimpy's Crock O' Christmas
Billy West
List of The Ren &amp; Stimpy Show episodes
The Ren &amp; Stimpy Show: Fire Dogs
Ren &amp; Stimpy &quot;Adult Party Cartoon&quot;
Man's Best Friend (Ren &amp; Stimpy)
Ren and Stimpy (characters)
Peter Avanzino
The Ren &amp; Stimpy Show
Richard Pursel

Ren & Stimpy's Crock O' Christmas is the second studio album and only Christmas album featuring characters from the Nickelodeon animated series, "The Ren and Stimpy Show".
William Richard West (born April 16, 1952) is an American voice actor, singer, comedian, musician, songwriter and former radio personality who is known for his voice-over work in a number of television series, films, video games and commercials.
 He has done hundreds of voice-overs in his career such as Ren (season 3 to season 5) and Stimpy on "The Ren & Stimpy Show"; Doug Funnie and Roger Klotz on "Doug"; and Philip J. Fry, Professor Farnsworth, Dr. Zoidberg, Zapp Brannigan and a number of others on "Futurama".
 He does voices for commercials and is the current voice of the red M&M and was also the voice of Buzz, the Honey Nut Cheerios Bee until 2004.
 In addition to his original voices, he has voiced Bugs Bunny, Elmer Fudd, Shaggy Rogers, Popeye and Woody Woodpecker during later renditions of the respective characters.
 He was a cast member on "The Howard Stern Show", noted for his impersonation of The Three Stooges' Larry Fine.
This is a list of episodes of the animated series "The Ren & Stimpy Show".
 The show premiered on Nickelodeon on August 11, 1991 directly following the premieres of "Doug" and "Rugrats", and it ran for five seasons until December 16, 1995, with the finale "A Scooter for Yaksmas".
 The series initially had no consistent grouping of segments into episodes; episodes and interstitial segments aired out of production order, some episodes and interstitials were produced for one season and aired in another, and two episodes, "Man's Best Friend" and "Sammy and Me / The Last Temptation", did not air in the series' original run at all.
 Instead, "Man's Best Friend" aired on the "Ren & Stimpy Adult Party Cartoon" for Spike in 2003 alongside the original show's pilot, "Big House Blues", uncut, and "Sammy and Me / The Last Temptation" aired on October 20, 1996 on MTV.
The Ren & Stimpy Show: Fire Dogs is a platform game developed by Argonaut Games, and published by THQ for the Super Nintendo Entertainment System in 1994.
 The game derives from "Fire Dogs" (1991), the eighth installment in the cartoon series "The Ren & Stimpy Show", created by Canadian animator John Kricfalusi.
Ren & Stimpy "Adult Party Cartoon" (A.K.A. "Ren & Stimpy's All New Adult Party Cartoon") was an American adult animated television series created by Canadian animator John Kricfalusi for the cable network Spike (previously known as TNN).
 The series was an adults-only-reboot, spin-off to the original animated series, "The Ren & Stimpy Show", which had previously aired on the American children's cable network Nickelodeon.
 It aired from June 26, 2003 to July 24, 2003, when Spike's entire animation block was discontinued.
 The last 3 episodes remained unaired on the network, and originally intended to end on August 14, 2003, but the 3 episodes are available on Ren & Stimpy "The Lost Episodes" DVD and on a variety of digital platforms and 6 episodes were ultimately cancelled.
 The series is rated TV-MA for explicit sexual dialogue.
 The series was produced by Spümcø and Spike Animation Studios.
 The series utilized Flash animation instead of traditional animation.
"Man's Best Friend" is a controversial episode of Nickelodeon's "The Ren & Stimpy Show" that was produced for the 2nd season of the show, but it never aired in the original run of the series.
 It was aired later on Spike TV as the first episode of "Ren & Stimpy "Adult Party Cartoon"".
 In this episode, Ren and Stimpy are adopted by George Liquor, who wants to make them champions.
Ren and Stimpy, created by John Kricfalusi, are the title characters in the American-Canadian animated television series "The Ren & Stimpy Show".
 Kricfalusi created the characters during his stay in Sheridan College and they first appeared on film in the pilot episode "Big House Blues".
 Ren is a scrawny, violently psychotic Chihuahua, and Stimpy is a fat, stupid cat.
 They are often at odds with each other on the show, though they do share moments of closeness together.
Peter Avanzino is an American animation director.
 He has directed several episodes of "Futurama", and served as supervising director on the 7th season of the series.
 Peter works for "Rough Draft Studios" in Glendale/Burbank.
 He has also directed episodes of "Drawn Together", "Duckman", "The Wild Thornberrys", "Sit Down, Shut Up", and "The Ren and Stimpy Show".
 He was also a storyboard artist on "The Ren and Stimpy Show" and "The Simpsons".
 Also, he directed the Christmas movie "How Murray Saved Christmas."
 He was born on May 26, 1962 and now resides in Los Angeles, California with his wife and kids, his favorite being his daughter.
The Ren & Stimpy Show is an American animated series created by John Kricfalusi for Nickelodeon.
 The series follows the adventures of title characters Ren, an emotionally unstable chihuahua, and Stimpy, a good-natured, dimwitted cat.
 It premiered on August 11, 1991 as one of the original three Nicktoons, along with "Rugrats" and "Doug".
 Throughout its run, the show was controversial for its off-color humor, sexual innuendo, dark humor, adult jokes, and violence.
 This controversy contributed to the production staff's altercations with Nickelodeon's Standards and Practices department.
 The show ended on December 16, 1996, with a total of five seasons and 52 episodes.
Richard Pursel (born Richard D. Pursel; September 17, 1964 in Lincoln, Nebraska) is an American television writer and storyboard artist.
 He is known as a writer for the television series "The Ren and Stimpy Show", "Ren and Stimpy "Adult Party Cartoon"", and "SpongeBob SquarePants".