We are expecting to see, on screen for the first time, major characters like Cyborg (Ray Fisher), The Flash (Ezra Miller), Iris West (Kiersey Clemons), Commissioner Gordon (JK Simmons), Mera (Amber Heard), and countless Amazonians and Atlanteans.
At the same time, Justice League is going to have to go out of its way to avoid simply becoming a movie that gets bogged down in introducing characters.
This movie could run three hours and still feel overstuffed.
That says nothing about Steppenwolf (Ciaran Hinds) and his evil minions.