WB has revealed that it will take the threat of an alien race, The Dominators, to unite the heroes of Arrow, The Flash, Legends of Tomorrow and Supergirl.
With Supergirl entering the Arrow-verse, she will be bringing aliens along — though it remains unclear how her Earth will integrate with Earth-1, where the casts of the other three series reside; Barry visited Kara’s Earth on Supergirl last season when he ran fast enough to open a portal.
“This year, for our mega ‘Arrowverse’ crossover, we’re taking inspiration from a DC crossover from the late 1980s known as Invasion!, which featured an alien race called the Dominators, who’d previously vexed the Legion of Superheroes,” Arrow and Legends of Tomorrow EP Marc Guggenheim says in a press release.
“We’re using cutting edge prosthetics and computer effects to achieve a feature film-quality look which is faithful to Invasion! artist Todd McFarlane’s interpretation of the characters.”
The Dominators, collectively known as the Dominion, are an alien race from the farthest reaches of the universe. A technologically-advanced species who specialize in genetics, their society is extremely hierarchical, with status depending on the size of a red circle that appears on their foreheads.
Invasion! was a major, three-issue crossover event in 1989 that featured the Dominators joining an Alien Alliance to wipe out humanity due to the threat the meta-gene that allows for humans to develop superpowers presents.
When they traveled to Earth, heroes and villains alike teamed up to fight to protect the world. The Dominators were also an enemy of the Legion of Superheroes in the 30th century.
It’s also worth noting that Arrow‘s 100th’s episode will air during the crossover, so we should definitely expect something special.