Crobat @ Black Sludge  
Ability: Infiltrator  
EVs: 248 HP / 8 Atk / 252 Spe  
Jolly Nature  
- Brave Bird  
- U-turn  
- Defog  
- Roost  

Crobat @ Life Orb  
Ability: Infiltrator  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Sludge Bomb  
- Heat Wave  
- Nasty Plot  
- Roost  

Crobat @ Choice Band  
Ability: Infiltrator  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Brave Bird  
- Cross Poison  
- U-turn  
- Pursuit