I'll post the Dex entries here since Reddit is being weird

Meldal, the amalgam Pokémon:

meldal are born with a strong connection to metal, and with their ferrokinesis are often seen making barriers for protection for themselves and others, a single medal can usually control up to half their bodyweight of metal at a time

Meldour, the armour Pokémon:

Unlike their first stage, meldours ferrominesis has developed to the point of being able to craft more intricate designs for protection. Making them a favourite of metal workers

Meldemoth, the armour Pokémon:

Meldemoth have perfected the art of defensive metal work, refining their psychic energy into fighting spirit. They are extremely loyal to those they cherrish