Board Thread:The Flash discussions/@comment-9346948-20161019001452/@comment-27700324-20161020214050

Kir the Wizard wrote: Magenta was similar to Jean/Phoenix.

Xandermcc wrote: I don't think that is how it works. I always thought that Barry and his friends don't exist in Kara's world. Supergirl just has the adventures of characters in the Superman-mythos and Martian-mythos. Yeah, Barry said there was no Cisco Ramon or Caitlin Snow there either.

Then again, seeing how Henry Allen ended up Jay Garrick on Earth Three, Supes-Earth Barry might be something like "Johny Garrick" or whatever, and Cisco is... Paco Ramone?

One way or another, the characters exist as long as the plot needs them. But they aren't needed.