Mega Chesnaught has made its Pokémon GO debut during Pokémon GO Fest 2026: Mega Finale, adding the Grass- and Fighting-type Mega Evolution to the mobile game for the first time. The debut was highlighted by Pokémon GO on Sept. 5 as part of the global GO Fest finale, giving Trainers a new Mega Evolution to encounter and add to their collections.
Source: Official Pokémon GO blog and Pokemon.com
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