Futurama/Batman

Version 1 (by Ms. Akari Mitsu)

 * Amy as the Batman
 * Igner as Robin
 * Nibbler as Batgirl
 * Hypnotoad as Red Robin
 * Scruffy as Alfred
 * Bev as Commissioner Gordon
 * Kif as the Joker
 * Robot Devil as Two-Face
 * Zapp Brannigan as Bane
 * Bender as Catwoman
 * Zoidberg as Poison Ivy
 * More ideas?