Why Did Melmetal FIGHT Against Eternatus?

Could Melmetal's demise be explained in a Legends Galar game? The darkest day in Pokémon Sword and Shield is something I have done a few Pokémon theories about, but connecting Eternatus to the mythical Pokémon aka the Hex Nut Pokémon, isn't a thing I covered yet. So lets look into the lore of gigantamax Melmetal, the legendary Pokémon Calyrex as well as the two dogs: Zacian and Zamazenta to see just how the Pokedex entries and Murals 3000 years ago all connect to the Galar Regions History. ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ Editing by Me & @tome7295‬ ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ SUBSCRIBE so that I can upgrade my Dental Plan ►    / @amazeddragon   ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ 00:00 - Melmetal's Creation 02:11 - Its Arrival 04:07 - Meteoric Weapons 05:56 - Their Demise ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ #PokemonTheory #Melmetal #Eternatus