Pokémon Go Mega Mewtwo Y counters, weaknesses and best moveset

Pokémon GO’s Go Fest 2026 has officially launched worldwide. Players should be aware of the habitat hour and raid timetable, and seize the opportunity to capture Bouffalant and Tropius. Mega Mewtwo Y and Mega Mewtwo X remain key counters. Beyond the event, the game offers a wealth of activities—Go Battle League, Remote Trading, PokéStop Showcase, Routes, and Max Battles—so be sure to snag rare Pokémon along the way.

Facing this challenge is no walk in the park. It boasts two genuine vulnerabilities—though Bug‑type moves are less effective—and it openly flaunts its power. Persistently assault it with its weak types, and keep backup squads ready for any wipe, and victory will eventually come.

If Mega Mewtwo isn’t in your roster, Mega Tyranitar is a dependable alternative—provided it carries Brutal Swing, which devastates Psychic‑types. Ideally, supplement with an array of Dawn Wings Necrozmas or Shadow Tyranitars, but if those are unavailable, bring your most powerful Pokémon that exploit its weaknesses. In short, any team featuring Brutal Swing deserves consideration.

This raid remains formidable, even by Super Mega Raid benchmarks. Experts advise assembling a group of at least ten trainers to tackle Mega Mewtwo Y. Though a smaller team might succeed, it demands meticulously balanced, top‑tier squads. High‑level players with perfect counters could potentially conquer it with five or six equally skilled allies.

Players can now pinpoint the exact CP ceiling for Mega Mewtwo Y, as well as the CP range they should anticipate when catching a standard Mewtwo after defeating its Mega counterpart.

To unleash Mega Mewtwo Y’s full potential as the top Psychic‑type, the ideal build pairs the fast move Confusion with the charged move Psystrike.

Shiny Mewtwo Y has finally arrived in Pokémon Go, debuting in May 2026 during the Go Fest 2026: Tokyo event. The shiny form has been a staple since 2019, but this marks the first time its Mega evolution is available.

With this new addition, trainers can explore fresh synergies and strategies, ensuring that the game remains vibrant and challenging for both casual players and seasoned veterans alike.

In the latest update, the shiny variant of Mewtwo Y retains the familiar green hue of its standard counterpart—a choice that many fans find underwhelming, given the long-standing perception that shiny Mewtwo has never quite captured the excitement of its regular form. Those who appreciate the original aesthetic will likely find this decision more satisfying, as it lets them emulate the chaotic flair of Kid Buu and revel in a more villainous playstyle.