Check out over 50 Justice League trailer screenshots! Warner Bros. Pictures released the official Justice League teaser trailer at the San Diego Comic-Con, and now we’ve compiled over 50 screenshots with all the coolest moments. Check out the Justice League trailer screenshots in the gallery below! RELATED: The Justice League Teaser Trailer Arrives! Fueled by his restored faith in humanity and inspired by Superman’s selfless act, Bruce Wayne enlists the help of his newfound ally, Diana Prince, to face an even greater enemy.