Peter. [ He'd been about to say something snarky, until Mordin popped up out of almost nowhere. He was a fast little guy. ]

Ah, Dr. Solus. Please, call me Tony. Only enemies call ms Stark. [and allies who hate him...]

Well, let's get going. The elevator is this way, but we'll be making a switch-off or two. [actually, it was four. He just wasn't going to tell them exactly how many off the top of his head. Peter might know he has running schematics of his building in his head, but Mordin didn't. ]