The Star of the Underground!! Mettaton is very flamboyant and eccentric, and borders narcissism. Mettaton is one salty robot! He could roast you on the fly for absolutely no reason at all, and throws insults out like confetti at a parade! Despite this, Mettaton actually has a soft side to him. He does enjoy Alphys' company, but loves to tease Undyne! He longs for a close friend that could care for him, even if he is a bit of a jerk, yet he cannot see that Papyrus easily fits this description, as the two do spend a lot of time together when Mettaton isn't shooting for a show. Even then he'll still roast Papyrus from time to time, but Papyrus merely finds them as 'funny jokes'. Mettaton supervises the creation of televised entertainment in the Underground.He's the Head News Anchor, The Leading Role in different Movies and Plays, the Lead Singer in most music videos.. you name it. he's there. Mettaton still has a close bond to Napstablook, who despite never being social, often visits Mettaton during shows and comes to watch his performances.  Mettaton's weapon of choice are his trusty Arm Cannons! He wields two sets, one's preinstalled and the one's he summons with his soul! He can fire off beams of energy, short circuit electric devices and light sources for buildings, and often can place mines on the ground for people to step on!

[I imagine Mettaton to sound like Ghirahim from Skyward Sword. Lmao. Be as expressive with him as you can! He's a very flamboyant personality!]