Ever since Earth-2 was introduced on The Flash, there has been an endless stream of dopplegangers showing up across worlds.
So, when Barry Allen accidentally ended up in the universe that Supergirl is a part of, the questions begged to be answered: Where is the Kara Danvers of Earth-1? Where is the Barry Allen of Supergirl’s universe?
According to executive producer Andrew Kreisberg, there’s at least the possibility that Earth-1 has a Supergirl (or Supergirl-to-be) of its own. He told EW, “Any Kara that exists on Earth-1 would also have to have been an alien. It can’t just be Kara Danvers from Poughkeepsie.”
When pressed on the matter, he said that should this Kara Danvers become Supergirl, she’d be wearing a “different costume.”
The Flash airs Tuedays at 8pm EST on The CW.
Supergirl airs Mondays at 8pm EST on CBS.SuperFable