Metagross-Mega @ Leppa Berry  
Ability: Harvest  
EVs: 248 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Extreme Evoboost  
- Searing Sunraze Smash  
- Sunny Day  
- Taunt  

Slowbro-Mega @ Shed Shell  
Ability: Wonder Guard  
EVs: 248 HP / 252 Atk / 252 Def / 252 SpD  
Relaxed Nature  
IVs: 0 Spe  
- Spectral Thief  
- King's Shield  
- Wish  
- Defog  

Gyarados-Mega @ Protective Pads  
Ability: Prankster  
EVs: 248 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Pursuit  
- Haze  
- Shore Up  
- Gastro Acid  

Audino-Mega @ Safety Goggles  
Ability: Wonder Guard  
EVs: 248 HP / 252 Def / 252 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Stealth Rock  
- Shore Up  
- Baton Pass  
- Whirlwind  

Mewtwo-Mega-X @ Fairy Memory  
Ability: Huge Power  
EVs: 248 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Photon Geyser  
- Multi-Attack  
- Sacred Fire  
- U-turn  

Gengar-Mega @ Choice Scarf  
Ability: Shadow Tag  
EVs: 248 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Moongeist Beam  
- Sludge Wave  
- Trick  
- Menacing Moonraze Maelstrom