Mew @ Leftovers
Trait: Synchronize
Hasty Nature (+Spd, -Def)
EVs: 240 HP / 12 Atk / 252 Spd
-X-Scissor
-Brick Break
-Swords Dance
-Stone Edge
Mew @ Leftovers / Life Orb
Trait: Synchronize
Timid Nature (+Spd, -Atk)
EVs: 240 HP / 100 Def / 100 SDef / 68 Spd
-Psychic
-Aura Sphere / Energy Ball / Flamethrower / Ice Beam / Thunderbolt
-Aura Sphere / Energy Ball / Flamethrower / Ice Beam / Thunderbolt
-Nasty Plot
Mew @ Leftovers
Trait: Synchronize
Bold Nature (+Def, -Atk)
EVs: 240 HP / 60 Def / 100 SDef / 104 Spd
-Toxic
-Swagger
-Roost
-Aura Sphere / Energy Ball / Flamethrower / Ice Beam / Psychic / Thunderbolt
Mew @ Choice Band
Trait: Synchronize
Jolly Nature (+Spd, -Atk)
EVs: 4 HP / 252 Atk / 252 Spd
-Aerial Ace / Brick Break / Earthquake / Explosion / Poison Jab / Shadow Claw / Stone Edge / X-Scissor
-Aerial Ace / Brick Break / Earthquake / Explosion / Poison Jab / Shadow Claw / Stone Edge / X-Scissor
-Aerial Ace / Brick Break / Earthquake / Explosion / Poison Jab / Shadow Claw / Stone Edge / X-Scissor
-Aerial Ace / Brick Break / Earthquake / Explosion / Poison Jab / Shadow Claw / Stone Edge / X-Scissor
To name just a few of them...