Forretress @ Leftovers  
Ability: Well-Baked Body  
EVs: 252 HP / 252 Def / 4 SpD  
Bold Nature  
- Volt Switch  
- Body Press  
- Rapid Spin  
- Pain Split  

Meloetta @ Assault Vest  
Ability: Regenerator  
EVs: 252 HP / 4 SpA / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Psyshock  
- Knock Off  
- U-turn  
- Thunderbolt  

Mandibuzz (F) @ Heavy-Duty Boots  
Ability: Fluffy  
EVs: 248 HP / 8 Atk / 252 Def  
Impish Nature  
- Knock Off  
- U-turn  
- Roost  
- Toxic  

Barraskewda @ Choice Band  
Ability: Primordial Sea  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Liquidation  
- Aqua Jet  
- Close Combat  
- Flip Turn  

Dialga-Origin @ Adamant Crystal  
Ability: Adaptability  
EVs: 252 HP / 136 Def / 120 SpA  
Quiet Nature  
- Flash Cannon  
- Draco Meteor  
- Heavy Slam  
- Stealth Rock  

Vaporeon @ Heavy-Duty Boots  
Ability: Unaware  
EVs: 252 HP / 4 Def / 252 SpD  
Sassy Nature  
- Scald  
- Flip Turn  
- Wish  
- Protect