During this event, Trainers can encounter nearly all Pokémon that have made their Pokémon GO debuts in their natural habitats.
Most Pokémon that have ever appeared in Pokémon GO will return during the event.
Pokémon will spawn in specific biomes based on their natural habitat and Pokédex classification, so exploring different environments may lead to different discoveries.
Be sure to explore various biomes to maximize your encounters during the event.
*This does not include Mythical Pokémon, Ultra Beasts, or certain species of Pokémon that are not normally found in the wild, including the following.
The following Pokémon will appear in raids.

Buzzwole


Pheromosa


Xurkitree

Celesteela


Kartana


Stakataka


Blacephalon

The following Pokémon will hatch from 2 km Eggs.
Mime Jr. will continue to only hatch in certain parts of the world.