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| Bug Notification
Swarm (Japanese: むしのしらせ Bug Notification) is an Ability introduced in Generation III. Twenty-four Pokémon can have this Ability, all of which are Bug types.
When a Pokémon with Swarm uses a Bug-type move, the power will increase by 1.5× if the user has less than or equal to ⅓ of its maximum HP remaining.
Outside of battle
From Pokémon Emerald onwards, if the Pokémon leading the party has Swarm, the chance of encountering wild Pokémon increases. In Pokémon Emerald, this Ability also increases the rate in which the cries of wild Pokémon could be heard on the field.
Swarm will do double the damage if the Pokémon using it is below 25% of its HP.
In Pokémon Conquest, Swarm will increase user's Attack if the Pokémon using it is below ⅓ of its HP.
Pokémon with Swarm
In the anime
| The user's Bug-type moves become more powerful when it gets tired or weak.
|| First Used In
|| When Leavanny becomes tired out or weak, its body becomes surrounded by a light-green aura, powering up its Bug-type attacks.
| Ash's Leavanny
|| Strong Strategy Steals the Show!
- Swarm is the only variation of the Ability Overgrow found in the wild in the games. The other three are only obtainable either on starter Pokémon or as a Hidden Ability.
In other languages