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Counter guide · Rock / Ground · Gen I

What beats Onix?

The 5 hardest counters to Onix ranked by type effectiveness, base-stat total, and Speed. Virizion outspeeds and hits for 4× with grass-type STAB.

Onix
No. 095
Onix
Rock Ground
BST 385 · Speed 70 · Atk 45 · SpA 30

Top 5 counters

  1. #1
    Virizion
    No. 640
    Virizion
    Grass Fighting
    Hits Onix for 4× via grass-type STAB Takes ½× back from rock-type STAB Speed: 108 > 70 (outspeeds) Lean: Physical (Atk 90)
  2. #2
    Toedscruel
    No. 949
    Toedscruel
    Ground Grass
    Hits Onix for 4× via grass-type STAB Takes ½× back from rock-type STAB Speed: 100 > 70 (outspeeds) Lean: Special (SpA 80)
  3. #3
    Palkia
    No. 484
    Palkia
    Water Dragon
    Hits Onix for 4× via water-type STAB Takes 1× back from rock-type STAB Speed: 100 > 70 (outspeeds) Lean: Special (SpA 150)
  4. #4
    Kyogre
    No. 382
    Kyogre
    Water
    Hits Onix for 4× via water-type STAB Takes 1× back from rock-type STAB Speed: 90 > 70 (outspeeds) Lean: Special (SpA 150)
  5. #5
    Kartana
    No. 798
    Kartana
    Grass Steel
    Hits Onix for 4× via grass-type STAB Takes 1× back from ground-type STAB Speed: 109 > 70 (outspeeds) Lean: Physical (Atk 181)

Onix's type weaknesses

4× weak to
Water Grass
2× weak to
Ice Fighting Ground Steel
Immune to
Electric

How this list is computed

Each candidate is scored on best-STAB damage into Onix, the damage taken back, Speed comparison, base-stat total, and offensive lean (Attack vs Sp. Attack). Candidates that Onix 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.