Tapu Koko @ Life Orb 
Ability: Magic Guard 
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
- Thunderbolt 
- Roost
- Dazzling Gleam 
- U-turn / Calm Mind

Tapu Koko @ Heavy-Duty Boots  
Ability: Primordial Sea  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
- Thunder  
- U-turn / Calm Mind 
- Dazzling Gleam / Grass Knot
- Roost

Tapu Koko @ Light Clay  
Ability: Magic Bounce  
EVs: 248 HP / 8 SpD / 252 Spe  
Jolly Nature  
- Reflect  
- Light Screen  
- U-turn  
- Taunt

Tapu Koko @ Choice Specs / Life Orb  
Ability: Adaptability
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
- Thunderbolt  
- Volt Switch
- Dazzling Gleam  
- Grass Knot / Roost