Undertale Cosplay Music Video – Mettaton Primadonna A new Cosplay video featuring some of our favourite Undertale cosplayers is live now. And this time #Mettaton has taken over with some help from some of his….friends. So enjoy the best(???) entertainment that the underworld has to offer. Our fabulous Mettaton: Gabi King Gabi also provided vocals and did and amazing job! Excited to be here, Papyrus: Voyager Costume Burgerpants (hates his job): Seamripper Cosplay Just….Napstablook: Hildaglitz Cosplay Want to see more Undertale Cosplay skits and outtakes? Subscribe share and like to see more MTT TV that we didn’t quite manage to fit in this video.