Tyranitar @ Choice Band  
Ability: Sand Stream  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Stone Edge  
- Crunch  
- Heavy Slam  
- Low Kick  

Venusaur @ Custap Berry  
Ability: Overgrow  
EVs: 68 HP / 92 Def / 252 SpA / 96 Spe  
Modest Nature  
- Frenzy Plant  
- Sludge Bomb  
- Earthquake  
- Endure  

Volcanion @ Sitrus Berry  
Ability: Water Absorb  
EVs: 148 HP / 184 Def / 80 SpA / 96 Spe  
Modest Nature  
- Overheat  
- Steam Eruption  
- Sludge Wave  
- Will-O-Wisp