Justice League: Doom (2012)
Dir. Lauren Montgomery
Batman is a notable and valued part of the Justice League collective, but he's never really been what one would call a 'team player'. He'd much rather be alone, doing things his way, accountable to no one but his his own (troubled) conscience.
But it's while alone that each member is most vulnerable. Ergo, if a megalomaniac with strategic knowledge and the proper resources was to target each of the individuals while they were divided…
JL: Doom is an exciting animation that's loosely based on author Mark Waid's four-issue Tower of Babel story that ran in the JLA comics in 2000.
The pacing is excellent, the action is plentiful, and there's a decent level of subtext in play. It's so well assembled that you might not even notice until afterwards that the villains are mostly blank slates who exist to facilitate the main antagonist, himself a character who gets some back-story but doesn't actually do very much. A more devastating threat comes from a less obvious place, and isn't as straightforward as it might sound.