Pokémon Go' Event Update: Armored Mewtwo Returns, Start Time, and Pokémon Day Celebrations

Party Hat Pokémon will appear in the wild, Eggs and Raids during the event.

Leek Duck - Armored Mewtwo strikes back in 5-star Raids

Pokemon Go: Pokemon Day brings new species to the game - Dexerto

Pokémon Go: Oroquieta - OROfficial

Pokemon GO's Pokemon Day Celebration Receives New Trailer, Featuring Armored Mewtwo And Clone Pokemon – NintendoSoup

Mewtwo Raid Battle Guide & Rewards

Pokémon Go will let you catch Clone Pokémon for the first time

October Infographic : r/TheSilphRoad

October & November releases potentially leaked! : r/TheSilphRoad

Pokémon GO is celebrating seven stellar years, and it's time to party!

Armored Mewtwo and party hat Pokémon are returning to Pokémon Go - Polygon

Pokémon GO Fest Day 2: Wild Speculation!