Board Thread:New on Arrowverse Wiki/@comment-807326-20160206040643/@comment-27178728-20160310161101

TimeShade wrote: To everyone who still doubted that they are on separate universes, the synopsis for the crossover confirmed they live on alternate universes.

Kara gains a new ally when the lightning-fast superhero The Flash suddenly appears from an alternate universe  and helps Kara battle Siobhan, aka Silver Banshee, and Livewire in exchange for her help in finding a way to return him home