Justice League: Twitter is super impressed, positive early reactions begin pouring...

Director Zack Snyder brought out the big guns at the Las Vegas CinemaCon to introduce scenes from the upcoming DC Comics films Justice League and Wonder Woman.

By his side were actors Ben Affleck (Batman), Jason Momoa (Aquaman), Ray Fisher (Cyborg), Ezra Miller (The Flash) and Henry Cavill (Superman).

He looked back on his seven year journey to bring these characters together on film. “I got a call from producers Christopher Nolan and Emma Thomas asking me how do you feel about Superman? And, so, I’m here today,” he said.

The session focussed on the upcoming Justice League movie (November), Wonder Woman (June) and Aquaman (which, according to Momoa, he was leaving to shoot that very day).

The event, which is designed for studios to showcase their upcoming slate for theatre owners also attracts movie journalists and critics, most of whom report back on Twitter.

Here are some reactions:

Aquaman trailer filled with concept art and animatics did a huge sell on the underwater world of Atlantis. Looked VERY COOL. #cinemacon

— Peter Sciretta (@slashfilm) March 30, 2017

Amazing Justice League trailer shown at #CinemaCon. Very much like the recent one with a few new shots. pic.twitter.com/J1E3o8ysVa

— Brandon Davis (@BrandonDavisBD) March 30, 2017

Justice League trailer on roids. More Flash. More Wonder Woman. More Bats #Cinemacon

— Chris Sylvia (@sylvioso) March 30, 2017

I love that #JusticeLeague is apparently going to be 2 hours & 50 minutes!!! Too long? Not nearly!!!

— Harry Knowles (@headgeek666) March 30, 2017

They just played a behind the scenes trailer 4 Aquaman which showed animated production artwork & narrated by @creepypuppet. Huge thumbs up

— Steven Weintraub (@colliderfrosty) March 30, 2017

Just saw a ton of footage from Wonder Woman and holy shit does it look awesome.

— Steven Weintraub (@colliderfrosty) March 30, 2017

Just saw a super slick reel of Aquaman concepts. It included people riding sharks underwater described as a dogfight. Wan has a great vision

— Germain Lussier (@GermainLussier) March 30, 2017

Saw three scenes from Wonder Woman. They were wonderful. Just the right blend of tones and action.

— Germain Lussier (@GermainLussier) March 30, 2017

A few new bits from Justice League. The Flash tapping a falling sword to Wonder Woman and then Flash geeking out over the Batsignal.

— Germain Lussier (@GermainLussier) March 30, 2017

They showed three clips from Wonder Woman, The movie looks better and better. Slick action.

— Peter Sciretta (@slashfilm) March 30, 2017

Justice League extended trailer featured two added scenes, one with The Flash geeking out about the Batsignal in the sky to Bruce Wayne.

— Peter Sciretta (@slashfilm) March 30, 2017

Justice League is due out in November.

With agency inputs