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When The CW president Mark Pedowitz confirmed that there is going to be a major crossover event involving "Arrow," "The Flash," "Supergirl" and "Legends of Tomorrow," everyone grew very excited; however, no one could have imagined the sheer magnitude of it all. It appears that the crossover is going to be bigger than expected.
A new behind-the-scenes trailer gave a sneak peek into what's coming in The CW's superhero universe. Stephen Amell and Grant Gustin were spotted doing a photo shoot together, and they were later joined by the "Legends of Tomorrow" team and Supergirl Melissa Benoist herself.
Tech nerds Cisco and Felicity Smoak also join in on the fun as they discuss the features of "Fight Club 2.0."
In another preview, titled "Superhero Fight Club 2.0," all the superheroes come together as they welcome Supergirl into the mix.
WB has confirmed that the big bad in the four-way crossover are the Dominators, inspired by the 1980's DC Comics crossover titled "Invasion!" The Dominators, according to EW, are technologically advanced aliens who form alliances with other alien races to invade the Earth. Their main target is to eliminate metahumans, whom they see as a threat.
"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," executive producer Marc Guggenheim said about the show.
The CW hasn't disclosed specific details as to how the crossover might play out, but actor Echo Kellum teased that it's going to be big.
"I definitely think we are handling our Arrow business and still doing this crossover," Kellum told ComicBook.com. "I think that's a good thing, especially for this magnitude of an episode. I know that the last few crossovers were helping set-up other shows, but there's no element of that here. Every show here is an already-established show.
In the meantime, "The Flash" Season 3 will kick-start the superhero spectacle as it premieres on Oct. 4. It will be followed by "Arrow" Season 5 on Oct. 5. "Supergirl" Season 2 will make its premiere on The CW on Oct. 10. "Legends of Tomorrow" will round up the awesome foursome on Oct. 13.