Mettaton is the robot television star of Undertale, the indie role playing game released by Toby Fox in 2015. Built by scientist Alphys, he begins as a rectangular robot before transforming into Mettaton EX, his sleek humanoid form designed for ratings and spectacle. Clips of his most flamboyant lines spread through gaming videos, remixes and soundboards as fans replayed the game, and this drawn out affirmation became shorthand for any transformation played for glamour rather than seriousness.