Leviathan (Gyarados-Mega) @ Lum Berry  
Ability: Pure Power  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Sucker Punch  
- Knock Off  
- Pursuit  
- Water Shuriken  

Imagine Dragons (Giratina) @ Safety Goggles  
Ability: Prankster  
EVs: 248 HP / 8 Def / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Encore  
- Curse  
- Recover  
- Destiny Bond  

1only (Audino-Mega) @ Shed Shell  
Ability: Wonder Guard  
Shiny: Yes  
EVs: 252 HP / 252 Def / 4 SpD  
Bold Nature  
IVs: 0 Atk  
- Baton Pass  
- Wish  
- Defog  
- King's Shield  

Furioso (Mewtwo-Mega-X) @ Choice Band  
Ability: Shadow Tag  
EVs: 252 Atk / 4 Def / 252 Spe  
Jolly Nature  
- Bolt Strike  
- Close Combat  
- Iron Head  
- Play Rough  

Athéna (Rayquaza-Mega) @ Life Orb  
Ability: Mold Breaker  
Shiny: Yes  
EVs: 252 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Substitute  
- Dark Void  
- Shell Smash  
- Oblivion Wing  

The Bee (Beedrill-Mega) @ Black Sludge  
Ability: Wonder Guard  
EVs: 252 HP / 4 SpD / 252 Spe  
Jolly Nature  
- U-turn  
- Spikes  
- Taunt  
- Will-O-Wisp