Eternatus @ Black Sludge  
Ability: Fur Coat  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD  
Relaxed Nature  
IVs: 0 Spe  
- Spectral Thief  
- Core Enforcer  
- Teleport  
- Recover  

Muk-Alola @ Dark Memory  
Ability: Ice Scales  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Careful Nature  
- Spectral Thief  
- Multi-Attack  
- Recover  
- Rapid Spin  

Gengar-Mega @ Spooky Plate  
Ability: Dazzling  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Tail Glow  
- Judgment  
- Spore  
- Secret Sword  

Venusaur-Mega @ Black Sludge  
Ability: Grassy Surge  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Calm Nature  
- U-turn  
- Apple Acid  
- Toxic Thread  
- Worry Seed  

Toxapex @ Black Sludge  
Ability: Prankster  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- Haze  
- Body Press  
- Recover  
- Flip Turn  

Beedrill-Mega @ Choice Band  
Ability: Tough Claws  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- U-turn  
- Poison Jab  
- Ice Hammer  
- V-create