Some of y'all keep talking about Ethan like he's some kind of dangerous killer. I really, really don't see it. He's creepy, sure. Borderline rapey, yes. Unscrupulous, self-centered, douchey, manipulative, absolutely. But actually physically dangerous? Nah. He has goons because they make him feel like a big man, and the one time he tried to be physical with MC, it went...poorly.
He is an antagonist, sure, and in what he's done to Erynn he's definitely a large villain in the story. But murder? I don't think he's got it in him.