[1] The series was directed by Tetsuji Nakamura and Yukio Kaizawa, and produced by Toei Animation.
The 150-episode series premiered on Japan's Fuji TV from April 6, 2003, to March 26, 2006, for three seasons.
Cartoon Network dropped the series after episode 77 on January 20, 2007, while YTV continued airing it until December 6, 2008, after two seasons.
[3] Except for the first four episodes (101-104), the third season was not dubbed in English as Viz's parent company Shogakukan, the publisher of the source manga, revoked its broadcasting rights.
[6][7] As of July 2009, thirteen DVD compilations of the English adaption of the anime have been released by Viz Media between November 8, 2005, and December 4, 2007.