A brand new trailer for Justice League was shown at Comic-Con, and Warner Bros. just posted it online for the world to see!We get to see the villain Steppenwolf in action for the first time, and he’s in a lot of the trailer. There’s all the amazing action you’d come to expect from the heroes, and even a nice tease with Alfred at the end. Who do you think that could be? Superman?Check out the new Justice League trailer from Comic-Con above!