[Her not being sure makes him have significantly fewer answers. He averts his gaze while he tries to come up with a sensible figure... But he could also simply respond to her new question, and deal with all of that stuff later! He'll take the out.]

I'm Mettaton! [His charismatic smile returns to him, and he presses his clawed fingertips to his chest plate.] Where I'm from, I'm an entertainer, a TV star, a performer of many talents... And the same is true in Aefenglom. But we speak less of that. For... reasons.

[Hush-hush about performance art over there. If she wakes up there, that's something she'll have to know. He raises a finger to his lips to indicate the secrecy.]