Kricfalusi formed Spümcø animation studio with partners Jim Smith, Bob Camp and Lynne Naylor. They began working on a pilot for The Ren & Stimpy Show on behalf of Nickelodeon, after the eponymous characters were favored by Nickelodeon Producer Vanessa Coffey in a presentation by Kricfalusi. The pilot was very well received, leading to the production of the first 13 half-hour episodes of the show. The show came to garner high ratings for Nickelodeon, and at the time was the most popular cable TV show in the United States, but the network disagreed with Kricfalusi's direction of the show, and disapproved of his missed production deadlines. Kricfalusi points specifically to the episode "Man's Best Friend", which depicts the character George Liquor as an abusive father figure, as the turning point in his relationship with Nickelodeon. One of the episodes, "Nurse Stimpy", did not meet Kricfalusi's approval because of the low quality of the rough cut of the episode that they received from the overseas studio, leading him to use the alias Raymond Spum in its credits. Nickelodeon terminated Kricfalusi's contract late September 1992, leaving it to Nickelodeon's Games Animation studio, which continued producing it for three more seasons before its cancellation.