Whose butterfly tattoo is that? (In your under the dome gif set for the monarch will be crowned)

Angie’s. That bit is shown at the end of episode 8, after Barbie and Julia’s conversation about “the monarch will be crowned”, so it’s a pretty strong hint. Also, though, back in episode 5, after we see all the monarchs on side of the dome as Norrie and Joe look at them, there’s another cut to Angie’s tattoo, but this time she’s still in that bunker with Big Jim about to come in.

I’m hoping that after all that bs with her being locked up for so long, she’s now going to become a central figure.