The English-language version of the series was produced by Hasbro Entertainment and Plastic Cow Productions. It made a truncated three-episode preview premiere on Cartoon Network's Toonami block on February 27, 2004. The series then made its official premiere on April 13, 2004, as part of the Saturday Video Entertainment System block, with fewer edits. When Toonami was moved to Saturdays, the block premiered the rest of the series. It was also aired in a 6:00 AM timeslot on early Weekday mornings, as part of Cartoon Network's "Early Prime" block, which was aimed at kids who were getting ready to go to school during this time.