Having duplicates from the other world could be very interesting for Flash. I have a feeling that the Killer Frost we see first won't necessarily be the Caitlyn we're used to.
I've also got theories on Cisco's inspiration for the Flash signal being something from the other world as well.
Full clip, I'm a little bit sick, come equipped
Look at what I did for the grit, got it lit, what a cinch
Brought 'em just a little pinch of the truth, and they flip
Now they hanging from my shit, lil' bit
It's the Mensch, the myth
I do push-ups nude on the edge of cliffs
The jewels come quick, all gold and bricked
Click, click, boxer cutter spit
Brother, what a trip