Mega Mewtwo Y counters Pokémon GO Trainers should prioritise are powerful Ghost and Dark-type attackers, with Dawn Wings Necrozma, Mega Houndoom and Mega Tyranitar among the strongest options for the Super Mega Raid. Mega Mewtwo Y headlines the second day of Pokémon GO Fest 2026: Mega Finale on Sunday, September 6, giving Trainers a limited window to battle the Psychic-type Mega Evolution.
Mega Mewtwo Y is considerably different from Mega Mewtwo X when it comes to weaknesses. While Mega Mewtwo X gains Fighting typing, Mega Mewtwo Y remains a pure Psychic-type, making Ghost, Dark and Bug attacks the types to concentrate on when building your raid team.
Best Mega Mewtwo Y Counters Pokémon GO
The strongest Mega Mewtwo Y counters Pokémon GO Trainers can currently use include Dawn Wings Necrozma, Mega Houndoom, Mega Tyranitar and other high-level Ghost and Dark attackers.
| Pokémon | Fast Attack | Charged Attack |
|---|---|---|
| Dawn Wings Necrozma | Shadow Claw | Moongeist Beam |
| Mega Houndoom | Snarl | Dark Pulse+ |
| Mega Mewtwo Y | Psycho Cut | Shadow Ball |
| Mega Tyranitar | Bite | Brutal Swing |
| Shadow Tyranitar | Bite | Brutal Swing |
| Mega Mewtwo X | Psycho Cut | Shadow Ball |
| Shadow Hydreigon | Bite | Brutal Swing |
| Shadow Darkrai | Snarl | Shadow Ball |
| Mega Gengar | Lick | Shadow Ball |
| Lunala | Shadow Claw | Shadow Ball |
| Mega Absol | Snarl | Brutal Swing |
Current raid simulations place Dawn Wings Necrozma among the strongest overall choices thanks to Moongeist Beam, while Mega Houndoom performs extremely well with its Dark-type attacks.
You do not need six perfect counters to participate successfully. A team of powered-up Ghost and Dark attackers with the correct moves is much more useful than simply choosing Pokémon with high CP.
Mega Mewtwo Y Weaknesses in Pokémon GO
Understanding its typing makes building Mega Mewtwo Y counters Pokémon GO teams much easier.
Mega Mewtwo Y is a pure Psychic-type Pokémon.
It is weak to:
| Attack type | Effect |
|---|---|
| Ghost | Super effective |
| Dark | Super effective |
| Bug | Super effective |
Mega Mewtwo Y resists Fighting and Psychic-type attacks.
There is no double weakness to exploit, so the goal is simply to bring the strongest Ghost, Dark or Bug attackers available to you.
Dawn Wings Necrozma Is One of the Best Mega Mewtwo Y Counters
Dawn Wings Necrozma is one of the best Mega Mewtwo Y counters Pokémon GO Trainers can bring into the raid.
The recommended moves are:
Shadow Claw + Moongeist Beam
Both provide excellent Ghost-type damage against Mega Mewtwo Y.
Dawn Wings Necrozma also combines strong damage output with better survivability than some of the more fragile Ghost attackers, making it particularly useful during a long Super Mega Raid.
If you have one already built, it deserves a place near the front of your team.
Mega Houndoom Is a Top Mega Mewtwo Y Counter
Mega Houndoom is another exceptional option against Mega Mewtwo Y.
Use:
Snarl + Dark Pulse+
Its Dark typing allows Mega Houndoom to exploit Mega Mewtwo Y’s Psychic weakness while also resisting Psychic-type damage.
Mega Houndoom is especially attractive for this raid because Super Mega Raids require each Trainer to bring a Mega-Evolved Pokémon if they want to contribute to breaking the boss’s shields.
That allows Mega Houndoom to fulfil both roles at once: dealing excellent damage and helping with the Super Mega Raid shield mechanic.
Best Dark-Type Mega Mewtwo Y Counters Pokémon GO
Dark attackers make up a large part of the strongest Mega Mewtwo Y counters Pokémon GO roster.
Strong options include:
- Mega Houndoom
- Mega Tyranitar
- Shadow Tyranitar
- Shadow Hydreigon
- Shadow Darkrai
- Mega Absol
Mega Tyranitar with Bite and Brutal Swing is particularly useful because it combines excellent Dark-type damage with strong durability.
Regular Tyranitar and Hydreigon can also be useful substitutes if you do not have their Mega or Shadow versions available.
Best Ghost-Type Mega Mewtwo Y Counters
Ghost-type attackers are equally valuable.
The strongest options include Dawn Wings Necrozma, Mega Gengar and Lunala.
Mega Gengar with Lick and Shadow Ball can deal enormous damage but is much more fragile than options such as Dawn Wings Necrozma or Mega Tyranitar.
That does not make Mega Gengar a bad choice, but you should expect it to faint relatively quickly depending on Mega Mewtwo Y’s moveset.
Are Bug Pokémon Good Against Mega Mewtwo Y?
Bug attacks are super effective against Mega Mewtwo Y, so Bug-type Pokémon can work when building Mega Mewtwo Y counters Pokémon GO teams.
However, the strongest Ghost and Dark attackers currently outperform most Bug options.
If your Ghost and Dark roster is limited, strong Bug attackers can still provide useful super-effective damage rather than forcing you to use neutral attackers.
For most established accounts, though, Dawn Wings Necrozma, Mega Houndoom, Mega Tyranitar and similar counters should take priority.
How Many Trainers Do You Need for Mega Mewtwo Y?
Mega Mewtwo Y appears in a Super Mega Raid, and Pokémon GO recommends tackling these battles with at least seven other Trainers.
That means players should aim for a group of eight or more, with each Trainer bringing at least one Mega-Evolved Pokémon.
Mega Mewtwo is an exceptionally powerful Legendary Mega Evolution, so larger groups are preferable if players are not using optimised counters.
Do not treat a theoretical minimum from raid simulations as the recommended group size. For an ordinary raid lobby, more Trainers will make the battle significantly safer.
Mega Mewtwo Y Super Mega Raid Shields Explained
Your Mega Mewtwo Y counters Pokémon GO party needs at least one Mega-Evolved Pokémon because of the Super Mega Raid shield mechanic.
During battle, Mega Mewtwo Y can become enraged and activate shields. These shields sharply reduce the damage dealt by normal attacks.
Each Trainer can break one shield.
When the shield phase begins, your Mega-Evolved Pokémon will automatically enter battle if it is not already active. Its next attack receives a major power increase that allows it to destroy one of Mega Mewtwo Y’s shields.
Once enough Trainers have broken the shields, Mega Mewtwo Y returns to its normal state and takes regular damage again.
Primal Groudon, Primal Kyogre and Ditto transformed into a Mega-Evolved Pokémon cannot break Super Mega Raid shields.
Best Mega Pokémon to Bring Against Mega Mewtwo Y
Mega Houndoom is one of the most useful Mega choices because it deals super-effective Dark damage while also satisfying the raid’s Mega requirement.
Mega Tyranitar is another excellent option.
Mega Gengar can also deal extremely high Ghost-type damage, although its lower durability means it may not remain on the field for as long.
If you do not own one of the optimal Mega Pokémon, still make sure at least one member of your party is Mega Evolved so you can contribute during the shield phase.
Mega Mewtwo Y Raid Date During Mega Finale
Mega Mewtwo Y appears during Pokémon GO Fest 2026: Mega Finale on Sunday, September 6, 2026.
| Date | Super Mega Raid Boss |
|---|---|
| Saturday, September 5 | Mega Mewtwo X |
| Sunday, September 6 | Mega Mewtwo Y |
Mega Mewtwo Y appears at certain Gyms during event hours from 10:00 a.m. to 6:00 p.m. local time.
Other Gyms will host the Mega Raid Bosses associated with whichever Mega Finale habitat is currently active.
There will be no Remote Raid limit on September 5 or September 6, making remote Mega Mewtwo Y raiding considerably easier during the event.
Mega Mewtwo Y Catch CP
After defeating Mega Mewtwo Y, you catch a regular Mewtwo rather than keeping Mewtwo permanently Mega Evolved.
Expected Mewtwo CP ranges are:
| Conditions | Catch CP |
|---|---|
| No weather boost | 2312 to 2387 CP |
| Windy weather | 2891 to 2984 CP |
Mewtwo caught from Mega Mewtwo Y raids during Mega Finale may also have a Mega Evolution-themed Special Background.
The raid also awards Mega Mewtwo Y Energy that can be used to Mega Evolve eligible Mewtwo into Mega Mewtwo Y.
Best Mega Mewtwo Y Counters Pokémon GO Team
A strong raid party could look like:
- Dawn Wings Necrozma
- Mega Houndoom
- Mega Tyranitar
- Shadow Tyranitar
- Shadow Hydreigon
- Lunala
Mega Gengar, Darkrai and other high-level Ghost or Dark attackers can easily substitute for anything you do not own.
The key to preparing Mega Mewtwo Y counters Pokémon GO teams is to concentrate on Ghost and Dark damage, bring an appropriate Mega-Evolved Pokémon and join a large enough group to handle the Super Mega Raid shields.
Mega Mewtwo Y is only the headline Super Mega Raid Boss on Sunday, September 6, so prepare your counters before the event begins if you want to spend the day concentrating on Mega Energy, Special Background Mewtwo encounters and successful raids rather than rebuilding your party between battles.
