Mienshao @ Normal Gem
Trait: Regenerator
EVs: 4 HP/ 252 Atk/ 252 Spe
Nature: Jolly
-U-turn
-Hi Jump Kick
-Acrobatics
-Fake Out
This Mienshao just uses Fake Out which gives it free damage and the gem powers it up. Without the gem acrobatics does massive damage. U-turn matches Regenerator and HJK gets powerful STAB.
Togekiss @ Kings Rock
Trait: Serene Grace
EVs: 112 HP/ 144 SAtk/ 252 Spe
Nature: Timid
-Thunder Wave
-Air Slash
-Aura Sphere
-Roost
The real Togekiss. Just use T-wave and Air Slash everything and they are gone with that para-flinch crap. Aura Sphere is coverage just anything thats weak to it. Roost is when you're dieing and you need that HP back.
Vaporeon is perfect. Just switch your EVs to 96 HP/ 252 Def/ 160 SDef and give him lefties.
Cofargius is better with lefties
Serperior @ Light Clay
Trait: Contrary
EVs: 4 HP/ 252 SAtk/ 252 Spe
Nature: Modest
-Light Screen
-Reflect
-Leaf Storm
-Hidden Power [Electric]
A funny type of dual screener, just set it up and get that Leaf Storm reverse boost, Hidden Power is just for coverage and Clay just holds up the screens a bit longer.
Jolteon @ Leftovers
Trait: Volt Absorb
EVs: 132 HP/ 176/ 200 Spe
Nature: Timid
-Volt Switch
-Shadow Ball
-Hidden Power [Ice]
-Thunder Wave
Jolt is only for coverage... and status inducer... and scouts... and sweeps... well you get the point.