"I must be... Nobody seems to know me. But that's fine!" It's not cause for concern or anything, definitely not stressing him out being unknown and without connections. (A detective can probably tell that he's lying, with the speed he rushes to focus on other things)

He takes to the emoji comfortably enough in that way that means he must've known about them once, and opts to leave off the dash noses, given his lack of nose. The eyes and mouths can stay.

He doesn't take to the explanation at all well, and it's a little bit blue screen-inducing. "...It... Devours worlds? Whole worlds got eaten?? Could that be... why I don't remember mine???"