Arguably one of the greatest things about Batman is his rogues gallery. In the Batman films we have seen some of Batma'ís greatest adversaries, but only 2 or 3 at a time. Some of the greatest Batman stories involve multiple villains such as The Long Halloween, Arkham Asylum: A Serious House on Serious Earth and Batman: Hush. There are also a number of significant villains that we are yet to see in a film such as Black Mask, Clayface, Harley Quinn, Hugo Strange, Hush, Killer Croc and Red Hood. In a Batman TV show, we could see these villains, and also how different combinations of these villains relate to each other.