Justice League will be the fifth movie in the DC Extended Universe. When it airs, only a handful of the characters will have been properly introduced, with Batman, Superman, and Wonder Woman all having had full films. The rest of the league, The Flash, Aquaman, and Cyborg have only been seen so far in cameos, without their origins explained or personalities explored. Meeting them and learning who they are is going to be a big part of Justice League.
Not too much is known about Justice League yet, but a few things have been revealed. Including the villains. The League will be fighting Parademons, a race of very loyal if not too bright aliens. That loyalty is to their leader Darkseid, a ruthless alien leader who wants to rule the universe. The Parademons will be a vast enough threat to bring together the members of the Justice League for the first time in order to fight them.
And it looks like they might not be alone. According to CBM, some fans think they have seen yet another race join the fight. If you look closely at the battle footage in the recent trailer, you may see some Thanagarians.
Hawkman and Hawkgirl have recently been seen in the Arrowverse, most notably in Legends of Tomorrow. However, in that series they were not Thanagarians, they were humans who were reborn every time they died. Their eternal resurrection was eventually attributed to interference from the Thanagarians near the end of the first season.
Source: CBM
- wonder woman Release Date: 2017-06-02 Justice League Release Date: 2017-11-17 Aquaman Release Date: 2018-12-21 Shazam! Release Date: 2019-04-05
