I'm visiting an alien world with a group of Hydra agents who want to bring back a planet-eating god.

[He bites his lip (dramatically) to make it stop moving. It only works long enough for Tony to continue asking.]

We wouldn't be able to enlist the same powered person regardless. For one, he's left. But even if he returns, I'd never subject him to that sort of torment again. He was trapped on the mirror side for a week. They tortured him terribly.