Mewtwo-Mega-Y @ Focus Sash  
Ability: Protean  
EVs: 248 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Hasty Nature  
- Shell Smash  
- Sunsteel Strike  
- Menacing Moonraze Maelstrom / Moongeist Beam  
- Moonblast  

Greninja-Ash (M) @ Focus Sash  
Ability: Magic Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Let's Snuggle Forever  
- Pursuit  
- Stealth Rock  
- Spore  

Ferrothorn @ Shed Shell  
Ability: Wonder Guard  
EVs: 248 HP / 252 Def / 252 SpA / 252 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Milk Drink  
- Defog  
- Core Enforcer  
- Baton Pass  

Chansey (F) @ Choice Scarf  
Ability: Imposter  
EVs: 248 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Switcheroo  
- Wish  
- Spikes  
- Baton Pass  

Regigigas @ Iapapa Berry  
Ability: Huge Power  
EVs: 248 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Shell Smash  
- Extreme Speed  
- Close Combat / Plasma Fists  
- Sunsteel Strike  

Groudon-Primal @ Earth Plate  
Ability: Wonder Guard  
EVs: 248 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Naughty Nature  
- Shell Smash  
- Sunsteel Strike  
- Sacred Fire  
- Judgment