There are plenty of examples of other genres of entertainment to draw characters from. Movies, comics, books and anime would be a number of prime candidates. And, as King suggested, there's the possibility of further specifying certain categories with which to hold a series of smaller tournaments. Examples might be "Final Fantasy Characters", "Anime Villains" or "Marvel Comics Characters". There are a number of possibilities for future tournaments. That discussion, however, will be examined at greater depth in the next few days.