Of course its Batman. Above is the first official image from Justice League: War, the animated movie from WB.
Justice League: War is an adaptation of the 2011 comic book crossover “The New 52″ by Geoff Johns. The film will be based on Geoff Johns and Jim Lee’s “Justice League Vol. 1: Origin” storyline. It was directed by Jay Oliva and scripted by Heath Corson. It is the 18th film in the DC Universe Animated Original Movies series.
The movie stars Jason O’Mara (Bruce Wayne / Batman), Alan Tudyk (Clark Kent / Superman), Michelle Monaghan (Princess Diana / Wonder Woman), Christopher Gorham (Barry Allen / The Flash), Justin Kirk (Hal Jordan / Green Lantern), Shemar Moore (Victor Stone / Cyborg), Travis Willingham (Shazam) and Steven Blum (Darkseid).