Meltan

Meltan (メルタン) is a -type Mythical Pokémon revealed in Pokémon GO and in Japanese on the official site for the Let's Go Pikachu and Eevee Switch games, which are Kanto region Generation VII sub-set pairs part of the main series.

Physiology
Meltan is a small Pokémon with a gold head, which resembles a hex nut, and a glossy silver body. A black sphere floats in the center of Meltan's head; the sphere itself is Meltan's eye. A red wire sticks out from Meltan's back, acting as a tail.

Behavior
Meltan's body is made out of liquid metal. This allows Meltan to corrode any metal and absorb it into its own body. In addition, Meltan generates electrical energy from the metal it absorbs; it uses the electricity as an energy source as well as an attack, which it releases from its eye.

Meltan can be very curious, showing interest in many things.

Evolution
Meltan evolves into Melmetal when it is fed 400 Meltan Candy in Pokémon GO.

Trivia

 * Meltan is the first new Pokémon revealed in Pokémon GO.
 * Meltan is the second Mythical Pokémon with a singular type that had its type introduced in Generation II, the other being Darkrai.
 * Meltan is the smallest Mythical Pokémon, along with Land Forme Shaymin.
 * Meltan is the shortest Steel-type along with Alolan Diglett and Klefki.
 * Many Ditto have been seen being transformed into Meltan in Pokémon GO since it was first released.
 * Meltan won’t be able to be found in Pokémon Let’s Go, only in Pokémon Go.
 * Meltan is the first Mythical Pokémon to be able to evolve.
 * Meltan has the lowest base stats of all Mythical Pokémon.
 * Meltan's source code in Let's Go Pikachu/Eevee gives it an ability even though Let's Go does not feature abilities.
 * Meltan (along with Melmetal) are the first Mythical Pokémon to be part of an evolutionary line.

Origin
Meltan's head is based on a hex nut. Its body is made up of mercury which is a liquid at room temperature, similar to Meltan's body. It uses electricity to form amalgams, types of rocks/metals that can be fused into one.

Etymology
Meltan comes from the word melt, metal, -tan (a Japanese suffix meaning small), tantalum (a kind of metal) and molten (a material that can be easily melted, like steel).