Justice League Trailer: 10 Big Questions We're Left With

6. How Much Of Mera (And The Other Supporting Players) Will We See?

One of the coolest new characters we see in the trailer is Mera, played by Amber Heard. An important figure in Atlantis and the life of Arthur Curry, she'll have a much bigger role in the solo Aquaman film, which raises the question of how much we'll see of her in Justice League? Is she just going to be in this one scene, or could she have a decent part to play in protecting Atlantis from the Parademons and Steppenwolf?

Of course, Mera isn't the only new supporting player we get to see here, with brief moments for Henry Allen (Billy Crudup) and Jim Gordon (J.K. Simmons). Again, it's hard to imagine either of them having too much to do here, rather being setup for The Flash and Batman solo movies respectively, but given they're in the trailer it suggests they could have some significance to the plot.