Heracross @ Custap Berry  
Ability: Swarm  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Reversal  
- Endure  
- Megahorn  
- Swords Dance  

Heatran @ Air Balloon  
Ability: Flash Fire  
EVs: 208 HP / 76 Def / 8 SpA / 216 Spe  
Modest Nature  
IVs: 0 Atk  
- Flash Cannon  
- Eruption  
- Taunt  
- Earth Power  

Carracosta @ Power Herb  
Ability: Sturdy  
EVs: 16 Atk / 252 SpA / 240 Spe  
Naive Nature  
- Shell Smash  
- Meteor Beam  
- Aqua Jet  
- Ice Beam