Owen knows he’s a pain in the arse; a cynical, lazy, sarcastic bastard and he’ll make no apologies for that. He has his reasons and those who need to, know what they are. Everyone else can take him as they find him or get stuffed, and quite frankly he couldn’t care less which.
But for all his cynicism and bitterness, first and foremost he’s a doctor, and God help anyone who gets in the way of him doing his job.
Human or alien, doesn’t matter; if they’re hurting he’ll fix them, or bust a gut trying.
He has no choice.