Mawile-Mega @ Mawilite  
Ability: Intimidate  
EVs: 160 HP / 252 Atk / 96 Spe  
Adamant Nature  
- Swords Dance  
- Play Rough  
- Knock Off  
- Sucker Punch

4 Attacks works too but Swords Dance is generally better on Glare Spam

Mawile-Mega @ Mawilite  
Ability: Intimidate  
EVs: 160 HP / 252 Atk / 96 Spe  
Adamant Nature  
- Iron Head / Play Rough
- Ice Punch  
- Thunder Punch  
- Fire Fang