Villain's play is definitely spazzalicious. Do you have any history with him? Is he frustration spazzing from being raised all the time, that kind of thing? If so, I don't hate a call. But without history, I think it's a fold. I would expect villain to often have a bizarro two pair here.

Oh you say he's an unknown. Vs an unknown I'd definitely fold here. I would need a pretty good read to call an overbet all-in with one pair.