Most daemons have at least vaguely humanoid forms, and they're known to occasionally remember fragments of things, strong impressions from who they were in life.

How was I to know that he was the one case in all of history that was different, especially when the gods themselves told me otherwise?

[He's quiet for a long enough moment that it almost seems like he's done speaking, but then - ]

You saw for yourself. He didn't look human anymore, except in the vaguest sense.