Batman and Mr. Freeze: Sub-Zero is the second animated movie about the caped crusader, but this time featuring his sidekick Robin, as well as Batgirl. This time around, the story is all about (you guessed it) Mr. Freeze, and his plan to kidnap Barbara Gordon as she's the only donor, living or dead, that is a match for Mr. Freeze's wife, who is in a coma and requires an operation. This was actually a straight-to-video title, but doesn't come off that way. It's actually shorter than its predecessor and feels more like an extended version of an episode of Batman: The Animated series more than anything, which isn't a bad thing. It's not quite as good overall as Mask of the Phantasm, but on its own, it's still quite entertaining.