Mewtwo-Mega-X @ Leppa Berry  
Ability: Huge Power  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Naughty Nature  
- Searing Sunraze Smash  
- First Impression  
- Photon Geyser  
- Close Combat  

Blissey (F) @ Wiki Berry  
Ability: Innards Out  
EVs: 252 HP / 252 SpA / 252 SpD / 252 Spe  
Gentle Nature  
IVs: 0 Atk / 0 Def  
- Magic Coat  
- Baton Pass  
- Defog  
- Whirlwind  

Mewtwo-Mega-Y @ Leppa Berry  
Ability: No Guard  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Fissure  
- Light That Burns the Sky  
- Stealth Rock  
- Stoked Sparksurfer  

Mewtwo-Mega-X @ Expert Belt  
Ability: Parental Bond  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Naughty Nature  
- Vacuum Wave  
- First Impression  
- Sucker Punch  
- Stoked Sparksurfer  

Houndoom-Mega @ Choice Scarf  
Ability: Wonder Guard  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Toxic Spikes  
- Menacing Moonraze Maelstrom  
- Blue Flare  
- Trick  

Meloetta @ Shed Shell  
Ability: Wonder Guard  
EVs: 252 HP / 252 Def / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Baton Pass  
- Shore Up  
- Defog  
- Spectral Thief