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Counter guide · Psychic · Gen I

What beats Mewtwo?

The 5 hardest counters to Mewtwo ranked by type effectiveness, base-stat total, and Speed. Chien-Pao outspeeds and hits for 2× with dark-type STAB.

Mewtwo
No. 150
Mewtwo
Psychic
BST 680 · Speed 130 · Atk 110 · SpA 154

Top 5 counters

  1. #1
    Chien-Pao
    No. 1002
    Chien-Pao
    Dark Ice
    Hits Mewtwo for 2× via dark-type STAB Takes 0× back from psychic-type STAB Speed: 135 > 130 (outspeeds) Lean: Physical (Atk 120)
  2. #2
    Yveltal
    No. 717
    Yveltal
    Dark Flying
    Hits Mewtwo for 2× via dark-type STAB Takes 0× back from psychic-type STAB Speed: 99 ≤ 130 (slower) Lean: Physical (Atk 131)
  3. #3
    Darkrai
    No. 491
    Darkrai
    Dark
    Hits Mewtwo for 2× via dark-type STAB Takes 0× back from psychic-type STAB Speed: 125 ≤ 130 (slower) Lean: Special (SpA 135)
  4. #4
    Tyranitar
    No. 248
    Tyranitar
    Rock Dark
    Hits Mewtwo for 2× via dark-type STAB Takes 0× back from psychic-type STAB Speed: 61 ≤ 130 (slower) Lean: Physical (Atk 134)
  5. #5
    Roaring Moon
    No. 1005
    Roaring Moon
    Dragon Dark
    Hits Mewtwo for 2× via dark-type STAB Takes 0× back from psychic-type STAB Speed: 119 ≤ 130 (slower) Lean: Physical (Atk 139)

Mewtwo's type weaknesses

2× weak to
Bug Ghost Dark

How this list is computed

Each candidate is scored on best-STAB damage into Mewtwo, the damage taken back, Speed comparison, base-stat total, and offensive lean (Attack vs Sp. Attack). Candidates that Mewtwo hits super-effectively for 2× or more without taking comparable damage back are filtered out — they die first. Type-immune candidates are excluded entirely.

Counters are theoretical type-chart matchups, not damage calculations. Item, ability, and move-set choices can swing real battles. Use this list as a starting point, not a final answer.