[Mettaton would nod if he had the appropriate head and neck needed to do such a thing. Instead, he speaks.]

Yes. The first challenge I was in involved some show business and engineering. She had to upgrade me quite a bit.

[He wonders vaguely if the things she changed about him will be permanent after the event is over. It's an interesting thought, but best saved for later. He turns to Frisk.]

Well. You're going to need to get on my back and hold on if we're going to do this.