W2 OU Team

I don't recall the EVs/IVs for any of these, since they're from my Black before I lost Black (lucky me I got to transfer beforehand).

Whimsicott (Moe, female) @Eject Button
Prankster
Timid
-Substitute
-Stun Spore
-Taunt
-Leech Seed
Pros:
=Out Taunts Thundurus-I
=Defense EVs/IVs help survive U-Turn Scouting
=Eject Button cancels U-Turn/Volt Switch, allowing for scouting
=General annoyance to opponents
Cons:
=If Taunt wears off and can't be renewed, complete Taunt-bait
=No offensive moves
=Paralysis hax reliance
=Leech Seed useless on Liquid Ooze/Grass types
=Specially fragile

Scizor (Bullet, male) @Choice Band
Technician
Adamant
-U-Turn
-Bullet Punch
-Superpower
-Pursuit
Pros:
=Reliable and priority STAB
=Overall good coverage (Bug/Steel/Fight/Dark)
=Decent scouting and revenge killing
Cons:
=Highly predictable- a common set
=Fire weakness x.x
=Choice Band lock

Metagross (Meteor) @Life Orb
Clear Body
Adamant
-Meteor Mash
-Earthquake
-Hammer Arm
-Bullet Punch
Pros:
=Decent coverage
=Immune to opponent induced stat drops
=Priority STAB
Cons:
=Life Orb recoil
=Meteor Mash missing
=Adds more Fire weakness

Reuniclus (WaterBear, female) @Flame Orb
Magic Guard
Bold
-Trick
-Psychic
-Recover
-Reflect
Pros:
=Steal items/cripple opponents
=Defense support for team
=Reliable STAB
=Recovery
=If Flame Orb takes effect, status immunity
Cons:
=Walled by Dark types
=No Trick Room support, so slowness
=May pick up harmful item

Volcarona (Apollo, male) @Rocky Helmet
Flame Body
Modest
-Quiver Dance
-Flamethrower
-Fiery Dance
-Bug Buzz
Pros:
=Reliable STABs
=Flame Body burn chance
=Decent typing
=Stat boosting
Cons:
=Stealth Rock weakness/no Rapid Spin support
=Rock in general
=Walled by Heatran

I thought about adding a Water type like Gyarados to my team to add coverage and to help with the Fire weakness. These 5 have done me great justice in the past, and I randomly add a 6th at random to mix it up. But, using just these 5, please tell me your thoughts and opinions on them, as well as suggestions for a permanent 6th member. If you find anymore cons, let me know~

 

My gen 4 Gyarados might work. She had Earthquake, Ice Fang, Waterfall, and Dragon Dance @Leftovers and Intimidate. Moxie might be the better ability though, so I'll try to get a hold of that.