Though Mettaton's appearance varies, he almost always posses a sassy, self-focused personality with a snarky edge. He originally appears as a gray, rectangular robot with a grid of lights at the top. He has four dials along the bottom of his body, two robotic arms, and a single wheeled leg.
Mettaton has two alternate forms. The first and most commonly depicted is "Mettaton EX". A humanoid android, he possess faux black hair, pale pseudo-skin, and visible metal segments below and above his left eye.
Mettaton NEO, his third form, has a more fighting-oriented design. His right forearm is replaced by what appears to be a cannon while his shoulders are clad in pauldrons, pieces of armor shaped like legs that appear longer than his actual arms. He also has noticeable wings on his back.
This tag implies the following tags: undertale