New CW superhero crossover details revealed 

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The CW is hosting what’s sure to be an epic four-way crossover between

, executive producer Andrew Kreisberg revealed how some of the characters will react to Kara, a.k.a. Supergirl (Melissa Benoist), given she’s one of very few aliens — if not the first — that they’ve come across.

“Some people, like Barry [Grant Gustin], already know her, so Barry’s completely cool with her,” Kreisberg says, referring to

crossover from last year. “Some people are instantly charmed by her; I think Sara’s [Caity Lotz] got a little crush on her. Diggle [David Ramsey], as always, just when he thinks he’s seen it all, there’s a moment in it where somebody says, ‘This is Supergirl,’ and they say, ‘What’s so super about her?’ and she just lifts off the ground. Dig’s like, ‘I’m convinced.’”

But not everyone in the Arrowverse may be as welcoming. “Part of Oliver’s [Stephen Amell] journey in those episodes is he’s kind of hit his breaking point for things he’s willing to accept,” Kreisberg says. “He’s had Mirakuru soldiers, the Lazarus Pit, magic, and Damien Darhk, but flying aliens who can incinerate you with their eyes is one beyond the pale for him. He’s keeping his distance, which is a very Oliver thing to do. Even Kara comments, ‘Does he not like me?’ Barry’s like, ‘No, that’s kind of how he treats everybody.’”

Oliver will certainly have to get used to the idea of aliens, considering the Dominators are the crossover’s villains. In the comics, specifically in

, the Dominators are a technologically advanced alien race who form a coalition with various other races to invade Earth, all in the name of eliminating the threat posed by unpredictable metahumans. The Daxamites were part of the coalition, and the newly arrived Mon-El (Chris Wood) on

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