original pilot and early promotional material of the show, Dukey was referred to as "Poochie". James Arnold Taylor said that he was not Fellows' original choice for the role of Johnny Test; he had previously voiced the lead character in the initial test pilot. After the show got picked up by Kids' WB! as a series, he was initially going to be replaced by a different voice actor, with a Canadian voice cast instead, but the studio had trouble finding Johnny's initial voice convincing for the first six episodes, so they gave Taylor back the role to redub his dialog for the rest of the first season and managed to keep him on the cast for the rest of the series. Aaron Simpson, who had developed the series and produced the pilot, was the creator and executive producer's first choice to serve as the producer of the show before he turned it down. Production The remainder of the first season was produced in-house by Warner Bros. Animation, but since the show was a U.S./Canada co-production, some of the animation production work was outsourced to Canadian animation studios Studio B Productions and Top Draw Animation, as well as South Korean animation production company Digital eMation, which also provided the original main title animation opening. Storyboarding of some of the episodes was done by Canadian animation studio Atomic Cartoons. Many of the original crew of the series' first production season consisted of alumni of well-known animation studios such as Cartoon Network Studios and Nickelodeon Animation Studio, as well as artists from the comic book industry, including Chris Savino, Marc Perry, Paul Stec, Matt Danner, Joe Horne, Mike Kazaleh, Brian Larsen, Jun Falkenstein, Scott Shaw!, Nora Johnson, Milton Knight, Ray Leong, Chris Battle, Casey Mitchum, Pat Ventura, John Derevlany, J.C. Cheng, Aliki Theofilopoulos, George Cox III, Frederick J. Gardner III, Allan Penny, Justin Schultz, Christopher D. Lozinski, Dane Taylor, and Rita Cooper. The original version of the show's theme song and all of its underscores were both written, composed, and conducted by Kevin Manthei, with creator Scott Fellows having written and provided the lyrics to the theme song. Voice recording was provided by Voicebox Productions, with voice direction by Terry Klassen. The merger of UPN and The WB into The CW Television Network had resulted in many budget cuts for the show, leading to the show being put on hiatus. Cookie Jar Entertainment,