Could there be a version of Kara Danvers on Earth-1?

Thats the looming question following the big crossover betweenThe Flash, Arrow, DCs Legends of TomorrowandSupergirl.

However, the powers that be behind the Berlanti-verse havent ruled out introducing Power Girl.

ALL CROPS: DC’s Legends of Tomorrow –“Invasion!"– Image LGN207b_0157.jpg – Pictured: Melissa Benoist as Kara/Supergirl – Photo: Diyah Pera/The CW – © 2016 The CW Network, LLC. All Rights Reserved

Credit: Diyah Pera/The CW

In the comics, Power Girl (a.k.a.

Kara Zor-L) is the cousin of Superman, but from an alternate universe specifically Earth-2.

Alas, it was more a sly nod to the fact that Routh previously portrayed Superman.

It was a throwaway [line], executive producer Marc Guggenheim says.

It was a total throwaway.

Last year onLegends, we did the prison break, Guggenheim continues.

Im like, Im getting it in one of these episodes!'

We dont have anything planned.

Does that mean the heroes ofThe Flash, Arrow, andLegendscould head to National City?

Maybe next year, Kreisberg says.

And though Kara may be gone, shes certainly not forgotten.

ET on The CW.