"Yeah its...its still hard to wrap my head around too and I knew about alternate universes before I got here. It's like time travel, best not to think about it too hard or you'll drive yourself crazy."

Billy stops himself before he starts going on about time travel too, one thing at a time. "We're not really close, we've fought together a few times, he's an Avenger, I'm a...honorary Avenger? His identity was a secret for a really long time."