Swarm increases the power of Bug-type moves by 50% (1.5×) when the ability-bearer's HP falls below a third of its maximum (known in-game as in a pinch
).
If a Pokemon with Swarm is leading the party Pokemon, wild Pokemon are twice as likely to appear.
| Generation III | Ups BUG moves in a pinch. |
|---|---|
| Generation IV | Powers up Bug-type moves in a pinch. |
| Generation V | Powers up Bug-type moves in a pinch. |
# | Name | 2nd ability | Hidden ability |
|---|---|---|---|
| 015 | Beedrill | — | Sniper |
| 123 | Scyther | Technician | Steadfast |
| 165 | Ledyba | Early Bird | Rattled |
| 166 | Ledian | Early Bird | Iron Fist |
| 167 | Spinarak | Insomnia | Sniper |
| 168 | Ariados | Insomnia | Sniper |
| 212 | Scizor | Technician | Light Metal |
| 214 | Heracross | Guts | Moxie |
| 267 | Beautifly | — | Rivalry |
| 313 | Volbeat | Illuminate | Prankster |
| 402 | Kricketune | — | Technician |
| 414 | Mothim | — | Tinted Lens |
| 540 | Sewaddle | Chlorophyll | Overcoat |
| 542 | Leavanny | Chlorophyll | Overcoat |
| 543 | Venipede | Poison Point | Quick Feet |
| 544 | Whirlipede | Poison Point | Quick Feet |
| 545 | Scolipede | Poison Point | Quick Feet |
| 588 | Karrablast | Shed Skin | No Guard |
| 589 | Escavalier | Shell Armor | Overcoat |
| 632 | Durant | Hustle | Truant |
# | Name | Other abilities |
|---|---|---|
| 595 | Joltik |
Compoundeyes Unnerve |
| 596 | Galvantula |
Compoundeyes Unnerve |
| 636 | Larvesta |
Flame Body |
| 637 | Volcarona |
Flame Body |