Crawdaunt @ Choice Band  
Ability: Adaptability  
EVs: 252 Atk / 4 Def / 252 Spe  
Naughty Nature  
- Crabhammer  
- Knock Off  
- Aqua Jet  
- Sludge Wave  

Walrein @ Heavy-Duty Boots  
Ability: Thick Fat  
EVs: 252 HP / 4 SpA / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Ice Beam  
- Toxic  
- Rest  
- Roar  

Volcanion @ Heavy-Duty Boots  
Ability: Water Absorb  
EVs: 252 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Steam Eruption  
- Flamethrower  
- Sludge Wave  
- Defog  

Tapu Fini @ Choice Scarf  
Ability: Misty Surge  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Surf  
- Moonblast  
- Ice Beam  
- Trick  

Swampert @ Rindo Berry  
Ability: Torrent  
EVs: 252 HP / 4 Def / 252 SpD  
Sassy Nature  
- Stealth Rock  
- Earthquake  
- Flip Turn  
- Mirror Coat  

Slowbro @ Heavy-Duty Boots  
Ability: Regenerator  
EVs: 248 HP / 252 Def / 8 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Ice Beam  
- Future Sight  
- Slack Off  
- Teleport