Mega Mewtwo Y Weaknesses Pokémon GO is one of the biggest searches during Pokémon GO Fest 2026 as Trainers prepare for one of the toughest Super Mega Raids ever released. Knowing the Mega Mewtwo Y Weaknesses Pokémon GO can make the difference between defeating the raid boss comfortably or running out of time.
If you’re wondering about the Mega Mewtwo Y Weaknesses Pokémon GO, the best counters, and how many Trainers you need, here’s everything you need to know.
Mega Mewtwo Y Weaknesses Pokémon GO
Mega Mewtwo Y is a Psychic-type Pokémon, giving it three primary weaknesses.
| Mega Mewtwo Y Weaknesses Pokémon GO | Damage |
|---|---|
| 👻 Ghost | 160% |
| 🌑 Dark | 160% |
| 🐛 Bug | 160% |
Using Pokémon with these move types will deal super-effective damage throughout the raid.
Mega Mewtwo Y Resistances Pokémon GO
Mega Mewtwo Y also resists several move types.
| Type | Resistance |
|---|---|
| Fighting | 62.5% |
| Psychic | 62.5% |
Avoid relying on Fighting or Psychic attackers unless they have exceptionally strong neutral coverage.
Best Mega Mewtwo Y Counters Pokémon GO
If you’re looking for the best Mega Mewtwo Y counters Pokémon GO, these Pokémon perform exceptionally well against the raid boss.
| Pokémon | Best Moveset |
|---|---|
| Dawn Wings Necrozma | Shadow Claw / Moongeist Beam |
| Mega Tyranitar | Bite / Brutal Swing |
| Mega Gengar | Lick / Shadow Ball |
| Shadow Tyranitar | Bite / Brutal Swing |
| Mega Houndoom | Snarl / Foul Play |
| Hydreigon | Bite / Brutal Swing |
| Shadow Chandelure | Hex / Shadow Ball |
| Giratina (Origin Forme) | Shadow Claw / Shadow Force |
| Darkrai | Snarl / Shadow Ball |
| Chandelure | Hex / Shadow Ball |
Strong Ghost and Dark-type attackers are generally your best option for this raid.
How Many Trainers Do You Need for Mega Mewtwo Y?
Most public raid groups should aim for 10 to 12 Trainers.
Highly organised groups using powered-up counters can complete the raid with fewer players, but larger groups make the battle significantly easier.
If you’re raiding with random players, waiting for at least 10 Trainers is recommended.
Can Mega Mewtwo Y Be Shiny?
Yes.
Defeating Mega Mewtwo Y gives you the chance to encounter a Shiny Mewtwo after the raid.
If you’re lucky enough to catch one, it can later be Mega Evolved into Shiny Mega Mewtwo Y using Mega Mewtwo Y Energy.
Mega Mewtwo Y Weather Boost Pokémon GO
Mega Mewtwo Y is weather boosted by Windy weather.
A weather-boosted encounter rewards a higher-level Mewtwo with a CP range of:
| Encounter | CP |
|---|---|
| Normal Raid | 3377–3492 |
| Weather Boosted | 4222–4366 |
A weather-boosted hundo has 4366 CP.
Tips for Defeating Mega Mewtwo Y
To maximise your chances of victory:
- Use Ghost-type Pokémon wherever possible.
- Build a strong Dark-type team as a backup.
- Mega Evolve one of your attackers for bonus damage.
- Join raid lobbies with at least 10 Trainers.
- Rejoin the battle immediately if your team faints.
- Keep Golden Razz Berries ready for the catch encounter.
Frequently Asked Questions
What are the Mega Mewtwo Y Weaknesses Pokémon GO?
Mega Mewtwo Y is weak to Ghost, Dark, and Bug-type attacks.
What are the best Mega Mewtwo Y counters Pokémon GO?
Dawn Wings Necrozma, Mega Tyranitar, Mega Gengar, Shadow Tyranitar, and Darkrai are among the strongest counters.
Can Mega Mewtwo Y be Shiny?
Yes. The Mewtwo encountered after defeating Mega Mewtwo Y can be Shiny.
How many people do you need for Mega Mewtwo Y Pokémon GO?
Most groups should aim for 10 to 12 Trainers for a comfortable victory.
