Pokémon-specific weakness guide
Omanyte Weaknesses and Counters
This guide explains Omanyte's defensive profile, including every weakness, resistance, immunity, and practical counter type based on its Rock / Water typing.

Omanyte
#0138
Resistances (5)
Immunities (0)
Battle notes
- Omanyte's Rock / Water typing is best attacked with Grass (4x), Electric (2x), Fighting (2x). Start with those attacking types when choosing moves or counter Pokémon.
- Avoid relying on common Fire, Normal, Ice attacks unless they have unusually high power or a secondary purpose, because Omanyte resists or ignores those matchups.
- This guide uses the modern Gen 6+ type chart only. Abilities, held items, Terastallization, weather, fields, and special move rules can still change real battle outcomes.
Best counter types
These attacking types hit the defender for super-effective damage under the modern Gen 6+ type chart.
Example Pokémon counters
Defensive typing summary
Omanyte's base defensive typing is Rock / Water. The weakness chart multiplies both types when a Pokémon has two types, so a matchup can become 4x, 2x, 1x, 0.5x, 0.25x, or 0x.
Related guides
FAQ
What is Omanyte weak to?
Omanyte is weak to Grass (4x), Electric (2x), Fighting (2x), Ground (2x).
Which attacking types are most practical against Omanyte?
Grass is the strongest listed attacking type against Omanyte at 4x damage. Use the example counter Pokémon section for practical users of that type.
Does Omanyte's ability change these weaknesses?
This page uses base defensive typing only. Abilities, held items, Terastallization, weather, fields, and special move rules can change actual battle outcomes.