Istredd chuckles and nods. "Deal, we will be very irritating before we portal away." That's if Dean ever comes here, which he suspects he has no intention of. This is most likely a problem for Castiel and their group, which includes Geralt, so he makes a note to talk to Yennefer about that later. He might not be close to Geralt, but she may like to be informed.

He puts his back to the wall next to Lucifer since he knows this is a comfortable pose for him and he doesn't mind. He reaches out to snag his hand and hold it for now.

"I doubt he's going to feel boring to the people who care about him. I don't know that I fully understand demons from your realm, is he someone entirely new or is the demon just him with less humanity?" He's uncertain if this is a possession situation or not. He suspects it isn't, it seems more likely the latter is true, but it's important to know for the future. Or when talking with Castiel.