Poor Caitlin, missing her alter ego. I'm going to guess that if/when she gets her powers back they will merged into 1. Though they act as if this was completely different person that took over her body.
What will happen to their personalities though if they are merged into one? Does one of them lose it? Or is it a combination of both? And if they are merged into one, won't that feel like the other has gone? Or does Caitlin start having voices in her head like Firestorm with Martin and Jax (or Ronnie)?
What happened to Siren X at the end? She disappeared without any explanation.
If she is stuck on Earth 1 (like Black Siren was) then if Black Siren is somehow killed off in Arrow, they can always bring out Siren X as yet another doppleganger to go through the same redemptive arc.
Or maybe Black Siren will become more good and we'll get her facing off against Siren X. Maybe Siren X might even show up on Arrow and will do two things:
1) She will manage to convince everyone that Laurel Lance (Black Siren) is who she says she is because there is now an "evil" version of her running around and appearing simultaneously
and 2) She will force Black Siren to look inside herself and decide whether she chooses to be good or evil when confronted by an even more evil version of herself who is a Nazi.
I think they should have given Siren X a different costume though. What are the chances of it being almost exactly the same? And does she normally go round with a mask on Earth X? How does she do her siren's cry with that on?
As for Devoe, how do people think that Team Flash will eventually beat him? Any ideas?
Maybe one of the following will happen:
1) Team Flash will use the thinking cap against him to drain him of his intelligence (like what is happening with Harry)
2) They'll use feelings to beat him and be unpredictable (like how he was unable to account for Barry's grief which prevented him from acting against Siren X)
3) Marlize will turn against him and help Team Flash (maybe sabotaging the thinking cap)
Or something else?
What do people think?