[Sadly, he has to admit his motivation wasn't as rational as that in this particular instance. But still.]

I know of a villain whose Quirk is to inhabit inanimate objects like walls and manipulate them from inside.

He was arrested recently, but that doesn't mean he couldn't have ended up here, too.

[Though, Nighteye died just a few hours ago. The arrest wasn't much earlier than that. If this is a longstanding fact about this station, then it becomes less likely.]