The Flash, Supergirl Crossover Would Need To Be Figured Out Soon

Despite conflicting reports about the possibility of a Flash/Supergirl crossover, producer Greg Berlanti, mastermind behind both shows, says it could still happen. However, the clock is ticking.

Berlanti spoke to Entertainment Weekly about the ever-intriguing possibility that the DC superhero shows on The CW, The Flash and Arrow, could be involved in a multi-part, multi-network crossover with CBS’ Supergirl. It’s not out of the question, but for it to happen before the end of 2016, the details would have to be worked out quickly.

Here’s what Berlanti told EW on the time pressure and logistics involved:

"I would love it, a lot of things would have to go right and people would have to say “Yes.” It would have to figured out very soon. It would all have to be figured out in the next month or so. As it remains right now we’ve talked internally about how cool it would be, but we haven’t had official conversations. [The CW chief Mark Pedowitz] is supportive."

So far, while The Flash and Arrow are closely linked, there’s been no indication that those shows are set in the same fictional universe as Supergirl. The closest we’ve gotten so far to a hint at any Kryptonians in the Arrow-verse is a line of dialogue in a trailer for the upcoming Legends of Tomorrow that references seeing “men of steel die.”

For its part, Supergirl mentions Superman indirectly in every episode and recently welcomed the Martian Manhunter to its mix of characters. But it hasn’t referenced Flash or Green Arrow or given fans any reason to think other famous DC superheroes are around in its world.

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Still, the introduction of the Multiverse this season on The Flash provides an obvious story mechanism for the heroes to get together while keeping their own network continuities separate, and the guess here is that any crossover would work in that fashion. It’s great to hear the idea isn’t dead yet, so we’ll keep our fingers crossed that this is one of those “where there’s a will, there’s a way” deals.