Gyarados @ Choice Band  
Ability: Intimidate  
EVs: 252 Atk / 4 Def / 252 Spe  
Jolly Nature  
- Waterfall  
- Power Whip  
- Avalanche  
- Giga Impact  

Garchomp @ Choice Specs  
Ability: Rough Skin  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Draco Meteor  
- Earth Power  
- Fire Blast  
- Surf  

Registeel @ Leftovers  
Ability: Clear Body  
EVs: 252 HP / 68 Def / 188 SpD  
Calm Nature  
IVs: 0 Atk  
- Body Press  
- Iron Defense  
- Amnesia  
- Rest