He's used to that talk. [There's a hint of bitterness in that statement, but it's mostly kept light.

When Jack introduces himself, there's a moment of disbelief, but then Pyro just shrugs. Not the weirdest thing he's met here.]

Guess we'll be seeing Mother Nature next. And if Lucifer's been here, not long before we should be expecting Jesus. [There's no dubious tone to his voice, though - he really does believe you, Jack. He's just over all this weirdness.]