Like Meltan, Melmetal can be transferred to Pokemon: Let’s Go, Pikachu! and Pokemon: Let’s Go, Eevee!, but only after the evolution takes place in Pokemon GO first.
The transformation requires 400 Meltan Candies obtained by catching Meltan and sending them to Professor Willow. Players can also gather the Candies by setting Meltan as their Buddy Pokemon and going for a walk, or by sending Meltan to Pokemon: Let’s Go, Pikachu! and Pokemon: Let’s Go, Eevee!
When Meltan evolves into Melmetal its liquid metal body hardens and becomes stronger. Since it’s a combination of several Meltans, the Melmetal stands 8'2" and weighs nearly 2,000 pounds. It’s incredibly strong and packs a heck of a punch.
It can also execute a unique move called the Double Iron Bash. When executing this move, Melmetal uses the hex nut in its spin its arms around, striking its opponent twice.
Melmetal can only be evolved in Pokemon GO, but it can be transferred to Pokemon: Let’s Go! upon its release on the Nintendo Switch on November 16th.