The CW previously set the dates for the annual Arrowverse crossover, with this year’s storyline heading to Gotham City, a place previously off-limits to The CW.
The CW has released the third teaser promo for their upcoming Arrow-verse crossover event titled Elseworlds, featuring a different version of Alex Danvers insulting Melissa Benoist’s Supergirl while locking her up in a prison cell.
That said, Batman does exist in this world, and Oliver Queen called him out by name last season on Arrow.
Arrow will continue the story on Monday, December 10, before it all comes to an end in Supergirl on Tuesday, December 11.