The following is a list of characters that have appeared in the television series The Batman , which ran from September 11, 2004, to March 22, 2008, as well as the show's tie-in comic called The Batman Strikes!. The animation style bears a strong resemblance to that of Jackie Chan Adventures , since Jeff Matsuda was the chief character designer for both shows. Many of the supervillains who appear in the series, like the Joker, Penguin and Riddler, are very different from their comic counterparts, and notable foes of Batman such as Two-Face, Scarecrow, Ra's al Ghul, and Mad Hatter are absent from the series altogether, though Scarecrow had early concept art made for him before he was barred from appearing, and Two-Face was planned to make an appearance in the tie-in comic, before it was ultimately canceled by issue #50 in October 2008. Other characters that were planned for a guest appearance in the tie-in comic (but ultimately did not appear) were Wonder Woman [1] and Bizarro [1] (who both had concept art made for them), as well as Vigilante [2] and Owlman. [3]
The Justice League is a superhero group that was formed following the invasion of the Joining.