Board Thread:Supergirl discussions/@comment-27750273-20170202001946/@comment-24152851-20170207015302

Xandermcc wrote: Ghost Leader wrote:

Don't forget Harley Quinn. She's kind of the most odd reference out, though, because if Batman only exists on Earth 38, that would mean the Joker exists on Earth 38, so why is Harley on Earth 1? Well i think Earth one has a Joker, but no Batman. Batman is later a thing as shown by him being on Eobard's newspaper. So it is in a way very similar to Gotham. Harley Quinn was mainly a Suicide Squad Easter Egg though, not directly to Batman. But the absence of Joker is interesting. We also have several Joker knockoffs running around in Arrowverse like Trickster, Count Vertigo, and Anarky. Almost like the real Joker inspired them.

Maybe Bruce Wayne exists on Earth 1 but he isn't Batman yet.