Gyarados-Mega @ Gyaradosite  
Ability: Intimidate  
EVs: 248 HP / 44 Atk / 28 Def / 44 SpD / 144 Spe  
Adamant Nature  
- Dragon Dance  
- Waterfall / Crunch / Earthquake / Power Whip / Bounce / Stone Edge
- Outrage / Crunch / Earthquake / Bounce / Power Whip / Stone Edge
- Taunt / Crunch / Earthquake / Bounce / Power Whip / Stone Edge

Gyarados-Mega @ Gyaradosite  
Ability: Intimidate  
EVs: 248 HP / 16 Atk / 28 Def / 44 SpD / 172 Spe  
Adamant Nature  
- Dragon Dance  
- Earthquake  
- Waterfall / Taunt / Crunch / Bounce / Power Whip / Stone Edge
- Outrage / Taunt / Crunch / Bounce / Power Whip / Stone Edge

Gyarados-Mega @ Gyaradosite  
Ability: Intimidate  
EVs: 136 HP / 4 Atk / 224 Def / 144 Spe  
Impish Nature  
- Dragon Dance  
- Stone Edge 
- Waterfall / Crunch / Power Whip
- Outrage / Taunt / Crunch / Earthquake / Bounce / Power Whip

Gyarados-Mega @ Gyaradosite
Ability: Moxie
EVs: 232 HP / 32 Atk / 244 Def  
Adamant Nature
- Curse
- Rest
- Ice Fang
- Payback

Gyarados-Mega @ Gyaradosite
Ability: Intimidate
EVs: 72 HP / 248 Def / 188 SpA
Bold Nature
- Thunderbolt
- Ice Beam
- Fire Blast
- Waterfall / Hurricane  / Taunt / Bide