Swampert-Mega @ Swampertite  
Ability: Swift Swim  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Stealth Rock  
- Waterfall  
- Earthquake  
- Ice Punch

Gyarados @ Flyinium Z  
Ability: Moxie  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Dragon Dance  
- Bounce  
- Waterfall  
- Taunt / Substitute

Greninja @ Choice Scarf  
Ability: Protean  
EVs: 4 Atk / 252 SpA / 252 Spe  
Naive Nature  
- U-turn  
- Ice Beam  
- Gunk Shot  
- Dark Pulse

Rotom-Wash @ Leftovers  
Ability: Levitate  
EVs: 248 HP / 216 Def / 44 Spe  
Bold Nature  
IVs: 0 Atk  
- Volt Switch  
- Hydro Pump  
- Pain Split  
- Will-O-Wisp

Pelipper @ Choice Specs  
Ability: Drizzle  
EVs: 4 Def / 252 SpA / 252 Spe  
Timid / Modest Nature  
- Hurricane  
- Hydro Pump  
- U-turn  
- Defog

Toxapex @ Black Sludge  
Ability: Regenerator  
EVs: 252 HP / 252 Def / 4 SpD  
Bold Nature  
IVs: 0 Atk  
- Scald  
- Haze  
- Toxic Spikes / Toxic 
- Recover