Essentials
Swarm

Summary
Strengthens Bug moves to inflict 1.5× damage at 1/3 max HP or less.
Effect
When this Pokémon has 1/3 or less of its HP remaining, its Bug-type moves inflict 1.5× as much regular damage.
Overworld: If the lead Pokémon has this ability, the wild encounter rate is increased.
History
- Before 


 Increases the frequency of cries heard on the overworld if any party Pokémon has this ability.
- Before 

 Has no overworld effect.
Flavor
Flavor Text

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Ups BUG moves in a pinch.
 
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Powers up Bug-type moves in a pinch.
 
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Powers up Bug-type moves in a pinch.
 
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Powers up Bug-type moves when the Pokémon is in trouble.
 
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Powers up Bug-type moves when the Pokémon’s HP is low.
 
Foreign Names
- Japanese
        

 - むしのしらせ (mushinoshirase)
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 - むしのしらせ
 - Korean
        

 - 벌레의알림
 - Chinese
        

 - 蟲之預感
 - 
        

 - 虫之预感
 - French
        

 - Essaim
 - German
        

 - Hexaplaga
 - Spanish
        

 - Enjambre
 - Italian
        

 - Aiutinsetto
 - Czech
        

 - Rojení
 
Pokémon
| Pokémon | Type | Ability | Gender | Egg Group | HP | Atk | Def | SpA | SpD | Spd | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Normal: May be found normally on Pokémon. | ||||||||||||
| Beedrill | 
     
     
 | 
    
Swarm
     Sniper  | 
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Bug | 65 | 90 | 40 | 45 | 80 | 75 | 395 | |
| Scyther | 
     
     
 | 
    
Swarm
     Technician Steadfast  | 
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Bug | 70 | 110 | 80 | 55 | 80 | 105 | 500 | |
| Scizor | 
     
     
 | 
    
Swarm
     Technician Light Metal  | 
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Bug | 70 | 130 | 100 | 55 | 80 | 65 | 500 | |
| Ledyba | 
     
     
 | 
    
Swarm
     Early Bird Rattled  | 
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Bug | 40 | 20 | 30 | 40 | 80 | 55 | 265 | |
| Ledian | 
     
     
 | 
    
Swarm
     Early Bird Iron Fist  | 
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Bug | 55 | 35 | 50 | 55 | 110 | 85 | 390 | |
| Spinarak | 
     
     
 | 
    
Swarm
     Insomnia Sniper  | 
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Bug | 40 | 60 | 40 | 40 | 40 | 30 | 250 | |
| Ariados | 
     
     
 | 
    
Swarm
     Insomnia Sniper  | 
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Bug | 70 | 90 | 70 | 60 | 70 | 40 | 400 | |
| Heracross | 
     
     
 | 
    
Swarm
     Guts Moxie  | 
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Bug | 80 | 125 | 75 | 40 | 95 | 85 | 500 | |
| Beautifly | 
     
     
 | 
    
Swarm
     Rivalry  | 
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Bug | 60 | 70 | 50 | 100 | 50 | 65 | 395 | |
| Volbeat | 
     
 | 
    
Illuminate
     Swarm Prankster  | 
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    Bug
     Human-Like  | 
    65 | 73 | 75 | 47 | 85 | 85 | 430 | |
| Kricketune | 
     
 | 
    
Swarm
     Technician  | 
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Bug | 77 | 85 | 51 | 55 | 51 | 65 | 384 | |
| Mothim | 
     
     
 | 
    
Swarm
     Tinted Lens  | 
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Bug | 70 | 94 | 50 | 94 | 50 | 66 | 424 | |
| Sewaddle | 
     
     
 | 
    
Swarm
     Chlorophyll Overcoat  | 
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Bug | 45 | 53 | 70 | 40 | 60 | 42 | 310 | |
| Leavanny | 
     
     
 | 
    
Swarm
     Chlorophyll Overcoat  | 
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Bug | 75 | 103 | 80 | 70 | 80 | 92 | 500 | |
| Venipede | 
     
     
 | 
    
Poison Point
     Swarm Speed Boost  | 
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Bug | 30 | 45 | 59 | 30 | 39 | 57 | 260 | |
| Whirlipede | 
     
     
 | 
    
Poison Point
     Swarm Speed Boost  | 
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Bug | 40 | 55 | 99 | 40 | 79 | 47 | 360 | |
| Scolipede | 
     
     
 | 
    
Poison Point
     Swarm Speed Boost  | 
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Bug | 60 | 100 | 89 | 55 | 69 | 112 | 485 | |
| Karrablast | 
     
 | 
    
Swarm
     Shed Skin No Guard  | 
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Bug | 50 | 75 | 45 | 40 | 45 | 60 | 315 | |
| Escavalier | 
     
     
 | 
    
Swarm
     Shell Armor Overcoat  | 
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Bug | 70 | 135 | 105 | 60 | 105 | 20 | 495 | |
| Durant | 
     
     
 | 
    
Swarm
     Hustle Truant  | 
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Bug | 58 | 109 | 112 | 48 | 48 | 109 | 484 | |
| Grubbin | 
     
 | 
Swarm | ![]()  | 
Bug | 47 | 62 | 45 | 55 | 45 | 46 | 300 | |
| Hidden: Found on Pokémon from the Dream World and Dream Radar, as well as a few Pokémon from specific in-game encounters. | ||||||||||||
| Joltik | 
     
     
 | 
    
Compound Eyes
     Unnerve Swarm  | 
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Bug | 50 | 47 | 50 | 57 | 50 | 65 | 319 | |
| Galvantula | 
     
     
 | 
    
Compound Eyes
     Unnerve Swarm  | 
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Bug | 70 | 77 | 60 | 97 | 60 | 108 | 472 | |
| Larvesta | 
     
     
 | 
    
Flame Body
     Swarm  | 
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Bug | 55 | 85 | 55 | 50 | 55 | 60 | 360 | |
| Volcarona | 
     
     
 | 
    
Flame Body
     Swarm  | 
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Bug | 85 | 60 | 65 | 135 | 105 | 100 | 550 | |
25 Pokémon










