The entire story is told across novels, manga, television, and video games.
It is not easy, to act in the name of justice.
In the episode "Party" Tsukasa initially miscalculates the product of 331 and 3 in answering the second riddle. This is only in the English dub.
The version airing on Cartoon Network deletes the series' usual ending credits sequence, instead replacing it with a much shorter montage of scenes from the series while an English version of the credits scroll by. This was done, because of an image, of nudity, and to reduce overall running time for advertising reasons.