Grumpig @ Choice Scarf  
Ability: Thick Fat  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Psychic  
- Shadow Ball  
- Focus Blast  
- Trick  

Grumpig @ Psychium Z / Ghostium Z / Fightinium Z / Colbur Berry
Ability: Thick Fat  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Calm Mind  
- Psychic / Psyshock
- Shadow Ball  
- Focus Blast

Grumpig @ Leftovers
Ability: Thick Fat  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Substitute  
- Calm Mind  
- Psychic / Psyshock
- Shadow Ball / Focus Blast

Grumpig @ Psychium Z / Leftovers / Colbur Berry
Ability: Thick Fat  
EVs: 252 HP / 4 SpA / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Thunder Wave / Toxic
- Psychic / Psyshock / Future Sight
- Shadow Ball  
- Focus Blast