[He had seen Bill in the crowd, his eye patch and general demeanor a dead giveaway to his place here, and Mettaton is surprised that he was able to get in at all. You'd think someone with his reputation would have been vetted, but things happen, apparently.
He has a suspicion as to why he's here too, so he calls out to him to try and get him on his grounds to gain the upper hand. When it doesn't work, at least not immediately, he knows that tonight is going to be interesting.
A couple of minutes later Mettaton receives the message, subtly plucking it off the champagne and tucking it into his suit pocket. His eyes rove over the party once more, finally locking onto the human in question and he grins, his teeth bright and perhaps a bit sharp in the light. He sweeps across the floor, easily dodging other interested parties to meet up with him.]
Well! It's certainly a surprise to see you here, darling.
Yeah, totally!
He has a suspicion as to why he's here too, so he calls out to him to try and get him on his grounds to gain the upper hand. When it doesn't work, at least not immediately, he knows that tonight is going to be interesting.
A couple of minutes later Mettaton receives the message, subtly plucking it off the champagne and tucking it into his suit pocket. His eyes rove over the party once more, finally locking onto the human in question and he grins, his teeth bright and perhaps a bit sharp in the light. He sweeps across the floor, easily dodging other interested parties to meet up with him.]
Well! It's certainly a surprise to see you here, darling.