Melmetal

Melmetal is a Steel-type Mythical Pokémon. It evolves from Meltan when fed 400 candies.

Trivia

 * This is the first Mythical Pokémon with the ability to evolve.
 * When Meltan evolves into Melmetal, it grows vastly stronger than before. Its body hardens as a result of its Evolution, and it becomes incredibly sturdy.
 * The bulk of its body is made of liquid metal. Its arms in particular are very flexible, and they can whip forward to deliver devastating punches.
 * Melmetal has a unique animation when being defeated at the gym, as its body melts into metalic puddle with nut-shaped parts of its body.