W Professors

Professor Willow discovers a strange Pokémon unlike anything in his records and contacts Professor Oak for help identifying it. Their investigation leads to the name Meltan, an ancient Mythical Pokémon with a body of liquid metal and an unusual attraction to metal objects.

As more Meltan begin appearing, the two professors exchange observations and a mysterious box that seems connected to the phenomenon. The mystery deepens when many Meltan gather together and reveal that their tiny individual forms are only part of a much larger secret: the colossal Pokémon Melmetal.