Defensive (Mightyena) @ Leftovers  
Ability: Intimidate  
EVs: 252 HP / 252 Def / 4 SpD  
Impish Nature  
- Crunch  
- Sucker Punch  
- Super Fang / Toxic
- Heal Bell / Taunt / Protect

Offensive (Mightyena) @ Black Glasses / Leftovers
Ability: Intimidate  
EVs: 252 HP / 252 Atk / 4 Def  
Adamant Nature  
- Crunch  
- Sucker Punch  
- Super Fang 
- Taunt / Substitute / Howl