Magnemite and Magneton are among the few species in Pokémon Legends: Arceus that players cannot get by locating their habitat. Both Magnemite and Magneton are Electric- and Steel-type Pokémon with strong ties to magnetism, so it's no wonder that neither Pokémon makes their home in the Hisui region by choice. In fact, the only Pokémon in this evolution line that players can find naturally in the Hisui region is Magnezone, but there's a specific in-game reason for that.
Players can get Magnezone in Pokémon Legends: Arceus by finding and catching the Pokémon in the Coronet Highlands on its own, without any signs of Magnemite or Magneton in the area. Magnezone's Pokédex entry states that Professor Laventon theorizes that a "special magnetic field influenced this Pokémon, changing its molecular structure and causing it to evolve. It emits radio waves toward space from its antenna." While it's unclear where Magnemite and Magneton make their home in Pokémon Legends: Arceus, Magnezone likely travels to the Coronet Highlands because it's the highest peak in the Hisui region. This would give them the ability to send radio waves into space more easily and would explain why players can find three Magnezone consistently in the Coronet Highlands.
Related: Pokémon Legends Arceus: Every Alolan Vulpix Location
How Magnezone even got to the Hisui region in the first place is still a mystery, but it may have something to do with the Space-Time Distortion zones in Pokémon Legends: Arceus. As many players know, Space-Time Distortion zones in Pokémon Legends: Arceus are places where Pokémon that aren't normally supposed to be in the area appear for a limited time. This includes Magnemite and Magneton, and multiple of each Pokémon are likely
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