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Metagross lives on the same mountain as Magnezone and gained a lot of power from the mountain's magnetic fields, due to their typing, that it could only release by battling. When the trench used for battling was flooded, it started battling Magnezone in a nearby town and was only stopped from destroying the town when the water in the trench was removed. At the end of the episode, both Metagross and Magnezone comically chase Dawn's Piplup within the crater due to the latter being hit by a Draco Meteor from Ash's Gible.