809 - Melmetal .

Transferring Melmetal from Pokémon Go to Let's Go Pikachu and Lets Go Eevee is the only way for the games to receive Melmetal, as this Pokémon cannot be in encountered in those games. Additionally, this Pokémon cannot be evolved from Meltan in those games.

The Original Trainer for Pokémon Go was changed for privacy purposes.

Additionally, this page also holds a shiny Melmetal captured and evolved by @wo0ts during the Lunar New Year Event (2019).
During the Lunar New Year Event (2019) in Pokémon Go, shiny Meltan has a chance of appearing from using the Mystery Box, duration listed below.

The cool down between box usage were temporarily reduced to 3 days instead of the standard 7 days.

The event runs from February 5th, 2019 to March 4th, 2019, and this marks the first time shiny Melmetal has been made available to players.