Let's GO, Meltan

Let's GO, Meltan is the fourth series of global Special Research tasks. The final goal is to catch Meltan, the Mythical Pokémon introduced in Pokémon Let's Go. It was available since November, 2018 and unlocks after reaching a Gold Medal for the Kanto Pokédex. This task allows players who don't have a way to unlock the Mystery Box (done by transferring any Pokémon to either "Pokémon HOME" or "Let's Go Pikachu/Eevee") to catch a Meltan. If Shiny Meltan are currently available to catch at the time the final task reward is unlocked, then it is also possible to get a Shiny Meltan from this research.

Trivia

 * The name of this Special Research was originally "Let's Go, Meltan", before the letter case of the "o" was changed to uppercase in around mid-2020.