Not much visibly stuns him, at this point. He lived in an era of impossible arcane heights, fought in a war that tore reality apart, lived in the aftermath.

The utter lack of reaction to the Lord of Hell's name, and the confirmation that follows...that does it. His gauntlet falls to the carpet with a dull thump and he doesn't bother to pick it up.

It's all startlingly genuine, and he knows that if this man did lie so expertly Asmodeus would whisper a warning into his head; he plays his own games, but he wants this solved.

"Asmodeus is one of the gods who shaped the world, and then almost destroyed it. ...Twice." That right there is a tone of bleak exasperation.

Absently, he tugs off his second gauntlet and lets that fall, too. "You came further than I thought. That leaves me on far less steady ground."