Batman/Teenage Mutant Ninja Turtles

Batman/Teenage Mutant Ninja Turtles is an animated crossover film based on the six-issue intercompany crossover comic book miniseries of the same name.

From Batman:

 * Batman
 * Alfred Pennyworth
 * Lucius Fox
 * Penguin
 * Killer Croc
 * Ra's al Ghul

From Teenage Mutant Ninja Turtles:

 * Leonardo
 * Michelangelo
 * Raphael
 * Donatello
 * Splinter
 * General Krang (flashback)
 * Stone Soldiers (flashback)
 * The Shredder
 * Bebop (flashback)
 * Rocksteady (flashback)
 * Foot Ninja