Mettaton (created in the world of Undertale in 2715) is a ghost in the body of a NES cartridge that turns to a robot with the flip of the switch. Due to their appearance, they are sometimes mistaken for a transvestite. He is the current owner of The CORE, and he was briefly made the ruler of the Underground before Frisk reset the timeline.Mettaton can be a troll in his own quizzes. You answer Mercy, you answered Wrong. You think the monster is a Froggit? You got trolled LMFAO!
His NES cartridge form has a power level of 65, but this statistic is inflated due to his obscenely high defense. It would only be about 45 if his defense was as low (relatively speaking) as his attack. One of his attacks involved throwing NES cartridge that, if not destroyed, throw more projectiles (projectile-ception) at the enemy. From a robot's point of view, it's outright disgusting that he is willing to use his own robot brethren this way.
- Before becoming the lone celebrity of the Underground (and a porn star), he was a female ghost named Copperton who spent too much time masturbating to fish porn.
- He is clearly based on the anime called Ghost in the Shell.
- He is apparently an oversize copy of Mega Man 2