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Chimhiko was first seen when Platinum lets him out of his Poké Ball and gives him the Pokédex for her bodyguards and instructs him to give it to one of the bodyguards. Matching the description, Chimchar jumps at Pearl and gives him the Pokédex. Right after that, a flock of Starly appear and begin attacking the group, which results in Chimhiko, Wig, Chahiko, and Lax fighting and defeating them after half an hour. When Chimhiko, Wig and Piplup are training in Eterna City for Platinum's Gym battle with Gardenia, Cynthia walks past them and notices that the three Pokémon are about to evolve, after which all three of them evolve.