[ Gunn figures it would probably be impolite - and lose him some 'cool' cred - if he blurted out that the Doctor's story sounded just like one from a comic series he loved, so he bit his tongue and refrained from informing him of that factoid.

(The fact stood, though: it totally reminded him of one of his favorite comic books.) ]

Aliens. [ Said with something like casual awe. He grins a little at the Doctor, trying to figure out what he wants to say himself. ] Not too familiar with aliens. Vampires, demons, oozy sewer monsters? Nothing new, but: you're an alien. That's pretty legit.