Swarm is an ability in the Pokémon series introduced in the third generation that is currently used by several Bug-type Pokémon.


This ability allows the Pokémon that is using it to raise its Bug-type moves by 50% if the Pokémon using it has less than one-third of its maximum HP.

Outside of battle, if the Pokémon leading the party has Swarm, the chance of encountering wild Pokémon increases from Pokémon Emerald and onwards.

Mystery Dungeon series

If a Pokémon with Swarm is below 25% of its HP, its Bug-type move hits can have double damage.

Pokémon with Swarm

As a Hidden Ability