Though the heroes of The Flash, Arrow, Supergirl, and DC’s Legends of Tomorrow were able to thwart the Dominators in the four-way crossover, viewers will see the Dominators again!
At the end of the crossover, the heroes prevented the Dominators from dropping a bomb that would kill all metahumans on Earth-1, slaying many of the Dominators in the process, while others were able to retreat. However, when we see them next, it’ll be under different circumstances.
“I will say this is not the last you’ve seen on the Dominators,” executive producer Andrew Kreisberg says. “The Dominators will return on Supergirl later this season.”
The reveal raises a number of questions. As discovered during the crossover, Kara Danvers (Melissa Benoist) hails from Earth-38, which means the Dominators who will appear on Supergirl are likely different from the ones in the crossover, coming from space in that universe — though that’s not yet confirmed. Supergirl also probably won’t repeat history, and these Dominators will surely have a slightly different motivation.
Here’s where the scary part comes in: In the comics, specifically Invasion, the Dominators were not alone in coming to Earth. More the politicians and planners, the Dominators assembled a coalition of other alien races, including the Thanagarians, the Khunds, and the Daxamites, to invade Earth.
That last race should sound familiar: Mon-El (Chris Wood) hails from Daxam. Could the reveal in the Supergirl winter finale that an unidentified alien race is hunting Mon-El be connected? Here’s a theory: That mysterious alien race could be among the coalition, who sent Mon-El ahead to Earth-38 to observe the planet before the armada arrives. After all, the Daxamites in the comics join the coalition in the first place as observers only before eventually joining the fight.
If this theory turns out to be true, the good news is that the Daxamites in the comics eventually turn against the coalition and side with Earth. Hopefully Mon-El and Kara’s blossoming relationship leads to a similar outcome — if this is actually going to happen!
As for whether the Dominators will ever return to the Earth-1 Arrowverse, it’s more likely we’d see them in the future on Legends or The Flash over Arrow. “We’ve certainly talked about it,” EP Marc Guggenheim says. “We don’t want to do it immediately, because we just told that story. I think it’s more of a Flash and Legends question than an Arrow question, because that’s not really what Arrow traffics in. But at some point, for sure.”
However, a potential return doesn’t mean the world at large on Earth-1 knows what happened with the Dominators — note that the ceremony with the president was secret. “We had a line that we cut for time and just re-watching it, I was like, ‘Oh, I really wished we’d found the time another way,’ Guggenheim says. “There was a line where the character Glasses — we call him Glasses because we’re so original — basically says, ‘Cover up what? A dozen weather satellites falling out of orbit?’ Because people see the ships, but no one ever really saw the Dominators. The way we’re playing it going forward is that Glasses is good at his job, and when he says he’s going to cover it up, he’s going to cover it up.”
“There’s a mention of it in The Flash that the threat of aliens brought out all the crazies,” Kreisberg adds, “but we’re sort of Doctor Who-ing it.”
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Supergirl will return in 2017, while the winter finales of The Flash, Arrow, and DC’s Legends of Tomorrow air Tuesday, Wednesday, and Thursday, respectively, at 8 p.m. ET on The CW.