@gregalicious: I'm pretty sure Earth-2 Caitlyn is going to be Killer Frost, I just don't think they'd turn Earth-1 Caitlyn into a villain.
Really great episode. I'm a sucker for superhero cameos so I'm hoping they're allowed to use Batgirl, would really like her to show up somewhere down the road.
Just realized something, what if Caitlyn from Earth 2 is Killer Frost? It would make sense that they would go that route instead of making her evil.
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