Swarm is one of the many abilities that are inheritable by Pokémon.
Function
Swarm will boost the power of Bug-type moves by 50% when at 1/3 HP or less.
Inheritable Pokémon
Predominant ability
Primary
| # No. | Pokémon | Type 1 | Type 2 | Ability 1 | Ability 2 | Hidden Ability | |
|---|---|---|---|---|---|---|---|
| 15 |  |
Beedrill | Bug | Poison | Swarm | Sniper | |
| 123 |  |
Scyther | Bug | Flying | Swarm | Technician | Steadfast |
| 165 |  |
Ledyba | Bug | Flying | Swarm | Early Bird | Rattled |
| 166 |  |
Ledian | Bug | Flying | Swarm | Early Bird | Iron Fist |
| 167 |  |
Spinarak | Bug | Poison | Swarm | Insomnia | Sniper |
| 168 |  |
Ariados | Bug | Poison | Swarm | Insomnia | Sniper |
| 212 |  |
Scizor | Bug | Steel | Swarm | Technician | Light Metal |
| 214 |  |
Heracross | Bug | Fighting | Swarm | Guts | Moxie |
| 267 |  |
Beautifly | Bug | Flying | Swarm | Rivalry | |
| 402 |  |
Kricketune | Bug | Swarm | Technician | ||
| 414 |  |
Mothim | Bug | Flying | Swarm | Tinted Lens | |
| 540 |  |
Sewaddle | Bug | Grass | Swarm | Chlorophyll | Overcoat |
| 542 |  |
Leavanny | Bug | Grass | Swarm | Chlorophyll | Overcoat |
| 588 |  |
Karrablast | Bug | Swarm | Shed Skin | No Guard | |
| 589 |  |
Escavalier | Bug | Steel | Swarm | Shell Armor | Overcoat |
| 632 |  |
Durant | Bug | Steel | Swarm | Hustle | Truant |
| 736 |  |
Grubbin | Bug | Swarm |
Secondary
| # No. | Pokémon | Type 1 | Type 2 | Ability 1 | Ability 2 | Hidden Ability | |
|---|---|---|---|---|---|---|---|
| 313 |  |
Volbeat | Bug | Illuminate | Swarm | Prankster | |
| 543 |  |
Venipede | Bug | Poison | Poison Point | Swarm | Speed Boost |
| 544 |  |
Whirlipede | Bug | Poison | Poison Point | Swarm | Speed Boost |
| 545 |  |
Scolipede | Bug | Poison | Poison Point | Swarm | Speed Boost |
Hidden ability
| # No. | Pokémon | Type 1 | Type 2 | Ability 1 | Ability 2 | Hidden Ability | |
|---|---|---|---|---|---|---|---|
| 595 |  |
Joltik | Bug | Electric | Compound Eyes | Unnerve | Swarm |
| 596 |  |
Galvantula | Bug | Electric | Compound Eyes | Unnerve | Swarm |
| 636 |  |
Larvesta | Bug | Fire | Flame Body | Swarm | |
| 637 |  |
Volcarona | Bug | Fire | Flame Body | Swarm |