Many of the Pokemon series' legendary and mythical Pokemon have been implemented into Pokemon GO. With the Kanto region being from the first generation, players are able to catch every single Pokemon from this region, including the rarer ones.
One of the rarest Kanto Pokemon in Pokemon GO is Mew, the first mythical Pokemon to ever appear. While players can't encounter Mew in the wild normally or fight it in raids, players are still able to get the chance to capture one.
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