No theme on this team. I think the strong point of this team is switch-ins. Let me know everything you think :)
=======================================================
Aerodactyl @ Focus Sash
Ability: Pressure
Nature: Jolly
EV's: 252 Atk, 252 Speed, 6 HP.
-Earthquake
-Rock Slide
-Taunt
-Stealth Rock
Aerodactyl is my personal favorite lead because he outspeeds all other OU stealth-rockers. Taunt prevents other stealth rock leads from doing their job. If I see a Metagross lead, for example, I can expect a Bullet Punch keeping me from using Taunt and Stealth Rock together, so I'd just Stealth Rock early, and switch Gyarados in to do the taunt keeping his Stealth Rock from going up. That way I can still use Aerodactyl later in a tight spot, or if I need an Earthquake switch in if Gyarados goes down. I choose Rock Slide over Stone Edge because of the accuracy and the flinch rate that Aerodactyl's high speed can utilize. I know that hoping for a flinch is just getting lucky, but then again, hoping for Stone Edge to hit is also a matter of luck.
----------------------------------------------------------------------
Gyarados @ Leftovers
Ability: Intimidate
Nature: Adamant
EV's: 212 HP, 16 Atk, 180 Def, 100 Speed.
-Waterfall
-Taunt
-Dragon Dance
-Earthquake
I love BulkyGyara. This set rarely lets me down. The HP and Defense EV's and it's already high base Sp. Def let it switch in easily. Taunt goes up to keep people from Roaring, etc. Then I start the Dragon Dancing. Usually, I won't need more than two to start sweeping, but in some cases, I do three or four. Waterfall is my main attack; I use it on anything that it is either normal or supereffective against, with the exception of Electric. For everything that resists water, Earthquake usually does the trick. Gyarados is also amazing at baiting Electric moves for Electivire to switch in on for Motor Drive boosts.
-----------------------------------------------------------------------
Electivire @ Expert Belt
Ability: Motor Drive
Nature: Adamant
EV's: 252 Atk, 252 Speed, 6 HP.
-ThunderPunch
-Ice Punch
-Cross Chop
-Earthquake
Electivire is my favorite Pokemon of all time, for four reasons. 1) Moves, 2) Ability, 3) Looks, 4) Name :D. Now why am I using him on my team? He has such a great diverse movepool, with moves supereffective against most types, hence the Expert Belt. I know I should have a Jolly nature, but I don't. Electivire's purpose is to sweep after taking a Motor Drive boost, giving him the speed he's missing out on. My Electivire works very well with my Gyarados. When Gyarados is threatened by an Electric move user before he has set up, I switch to Electivire for Motor Drive. And when Electivire is threatened by an Earthquake user, I can switch back to Gyarados (or Aerodactyl just in case Gyarados was taken down).
----------------------------------------------------------------------
Scizor @ Life Orb
Ability: Technician
Nature: Adamant
EV's: 252 HP, 252 Atk, 6 Speed
-Bullet Punch
-Brick Break
-Roost
-Swords Dance
Scizor is one of my favorite Pokemon, I used him a ton when I was just playing the story back in GSC before I knew competitive battling even existed. I can't get enough of Technician Bullet Punch. I chose Brick Break over Superpower because after Swords Dance, Brick Break takes care of those resistant to Bullet Punch just fine. And I don't have to worry about losing half a Swords Dance in the process, as well as defense. Roost recovers HP lost while Swords Dancing and from Life Orb. Also great at taking Bug attacks for Umbreon, and Electric attacks for Gyarados if Electivire was taken down.
---------------------------------------------------------------------
Umbreon @ Leftovers
Ability; Synchronize
Nature: Impish
EV's: 252 HP, 130 Def, 128 Sp. Def
-Toxic
-Protect
-Payback
-Wish
Umbreon should have never been moved to the UU tier in my opinion. Umbreon is great at passing Wish around, being able to switch into most non-fighting moves. Toxic is how Umbreon takes enemies down. Once he gets Toxic down, he just needs to stall with Wish and Protect, and he outlasts most enemies. If a steel switches in to prevent Toxic, Payback can do a bit to that, despite it being weak against steel. The 100 power does a decent amount, along with my luckiness at getting a perfect 31 Attack IV Umbreon :P The only exceptions to all this are Machamp, Infernape, Scizor, and Salamence. Umbreon can't keep himself up against Machamp, Infernape, or Salamence for the time needed to get the first Toxic and Wish; They 2HKO him. Scizor walls the Toxic, and is 4x resistant to Payback. But hey, what the hell is switching out for then?
--------------------------------------------------------------------
Infernape @ Life Orb
Ability: Blaze
Nature: Hasty
EV's: 26 Atk, 252 Sp. Atk, 232 Speed
-Flamethrower
-Close Combat
-Grass Knot
-Nasty Plot
Infernape is also a favorite of mine. He just covers the holes for the rest of the team here while being able to set himself up as well. Flamethrower is for STAB and countering enemy Scizors with a 4x Steel resistance. Close Combat takes care of special walls that might switch in (Blissey, anyone?) and also gets STAB. Grass Knot is for Swampert / Rhyperior / Milotic, etc. Nasty Plot sets him up to special sweep. The only bulky water that he can't take down is Vaporeon, but of course you wouldn't keep Abomasnow in against Heatran, would you?
-------------------------------------------------------------------
Thanks in advance for any advice or criticizm, I really appreciate it!
I have some other already EV trained Pokemon that I could use if you think it's necessary, I'll just give a short summary.
Starmie (Hasty, Natural Cure, 252 Sp. Atk, 252 Speed)
Ice Beam, Thunderbolt, Surf, Psychic
---
Kingdra (Modest, Sniper, 118 HP, 252 Sp. Atk, 140 Speed)
Surf, Ice Beam, Dragon Pulse, Flash Cannon
---
Gengar (Timid, Levitate, 252 Sp. Atk, 252 Speed)
Psychic, Energy Ball, Shadow Ball, Thunderbolt
---
Tyranitar (Adamant, Sand Stream, 252 Atk, 252 Speed)
Crunch, Brick Break, Stone Edge, Earthquake
---
Thanks Again!
=======================================================

Aerodactyl @ Focus Sash
Ability: Pressure
Nature: Jolly
EV's: 252 Atk, 252 Speed, 6 HP.
-Earthquake
-Rock Slide
-Taunt
-Stealth Rock
Aerodactyl is my personal favorite lead because he outspeeds all other OU stealth-rockers. Taunt prevents other stealth rock leads from doing their job. If I see a Metagross lead, for example, I can expect a Bullet Punch keeping me from using Taunt and Stealth Rock together, so I'd just Stealth Rock early, and switch Gyarados in to do the taunt keeping his Stealth Rock from going up. That way I can still use Aerodactyl later in a tight spot, or if I need an Earthquake switch in if Gyarados goes down. I choose Rock Slide over Stone Edge because of the accuracy and the flinch rate that Aerodactyl's high speed can utilize. I know that hoping for a flinch is just getting lucky, but then again, hoping for Stone Edge to hit is also a matter of luck.
----------------------------------------------------------------------

Gyarados @ Leftovers
Ability: Intimidate
Nature: Adamant
EV's: 212 HP, 16 Atk, 180 Def, 100 Speed.
-Waterfall
-Taunt
-Dragon Dance
-Earthquake
I love BulkyGyara. This set rarely lets me down. The HP and Defense EV's and it's already high base Sp. Def let it switch in easily. Taunt goes up to keep people from Roaring, etc. Then I start the Dragon Dancing. Usually, I won't need more than two to start sweeping, but in some cases, I do three or four. Waterfall is my main attack; I use it on anything that it is either normal or supereffective against, with the exception of Electric. For everything that resists water, Earthquake usually does the trick. Gyarados is also amazing at baiting Electric moves for Electivire to switch in on for Motor Drive boosts.
-----------------------------------------------------------------------

Electivire @ Expert Belt
Ability: Motor Drive
Nature: Adamant
EV's: 252 Atk, 252 Speed, 6 HP.
-ThunderPunch
-Ice Punch
-Cross Chop
-Earthquake
Electivire is my favorite Pokemon of all time, for four reasons. 1) Moves, 2) Ability, 3) Looks, 4) Name :D. Now why am I using him on my team? He has such a great diverse movepool, with moves supereffective against most types, hence the Expert Belt. I know I should have a Jolly nature, but I don't. Electivire's purpose is to sweep after taking a Motor Drive boost, giving him the speed he's missing out on. My Electivire works very well with my Gyarados. When Gyarados is threatened by an Electric move user before he has set up, I switch to Electivire for Motor Drive. And when Electivire is threatened by an Earthquake user, I can switch back to Gyarados (or Aerodactyl just in case Gyarados was taken down).
----------------------------------------------------------------------

Scizor @ Life Orb
Ability: Technician
Nature: Adamant
EV's: 252 HP, 252 Atk, 6 Speed
-Bullet Punch
-Brick Break
-Roost
-Swords Dance
Scizor is one of my favorite Pokemon, I used him a ton when I was just playing the story back in GSC before I knew competitive battling even existed. I can't get enough of Technician Bullet Punch. I chose Brick Break over Superpower because after Swords Dance, Brick Break takes care of those resistant to Bullet Punch just fine. And I don't have to worry about losing half a Swords Dance in the process, as well as defense. Roost recovers HP lost while Swords Dancing and from Life Orb. Also great at taking Bug attacks for Umbreon, and Electric attacks for Gyarados if Electivire was taken down.
---------------------------------------------------------------------

Umbreon @ Leftovers
Ability; Synchronize
Nature: Impish
EV's: 252 HP, 130 Def, 128 Sp. Def
-Toxic
-Protect
-Payback
-Wish
Umbreon should have never been moved to the UU tier in my opinion. Umbreon is great at passing Wish around, being able to switch into most non-fighting moves. Toxic is how Umbreon takes enemies down. Once he gets Toxic down, he just needs to stall with Wish and Protect, and he outlasts most enemies. If a steel switches in to prevent Toxic, Payback can do a bit to that, despite it being weak against steel. The 100 power does a decent amount, along with my luckiness at getting a perfect 31 Attack IV Umbreon :P The only exceptions to all this are Machamp, Infernape, Scizor, and Salamence. Umbreon can't keep himself up against Machamp, Infernape, or Salamence for the time needed to get the first Toxic and Wish; They 2HKO him. Scizor walls the Toxic, and is 4x resistant to Payback. But hey, what the hell is switching out for then?
--------------------------------------------------------------------

Infernape @ Life Orb
Ability: Blaze
Nature: Hasty
EV's: 26 Atk, 252 Sp. Atk, 232 Speed
-Flamethrower
-Close Combat
-Grass Knot
-Nasty Plot
Infernape is also a favorite of mine. He just covers the holes for the rest of the team here while being able to set himself up as well. Flamethrower is for STAB and countering enemy Scizors with a 4x Steel resistance. Close Combat takes care of special walls that might switch in (Blissey, anyone?) and also gets STAB. Grass Knot is for Swampert / Rhyperior / Milotic, etc. Nasty Plot sets him up to special sweep. The only bulky water that he can't take down is Vaporeon, but of course you wouldn't keep Abomasnow in against Heatran, would you?
-------------------------------------------------------------------
Thanks in advance for any advice or criticizm, I really appreciate it!
I have some other already EV trained Pokemon that I could use if you think it's necessary, I'll just give a short summary.
Starmie (Hasty, Natural Cure, 252 Sp. Atk, 252 Speed)
Ice Beam, Thunderbolt, Surf, Psychic
---
Kingdra (Modest, Sniper, 118 HP, 252 Sp. Atk, 140 Speed)
Surf, Ice Beam, Dragon Pulse, Flash Cannon
---
Gengar (Timid, Levitate, 252 Sp. Atk, 252 Speed)
Psychic, Energy Ball, Shadow Ball, Thunderbolt
---
Tyranitar (Adamant, Sand Stream, 252 Atk, 252 Speed)
Crunch, Brick Break, Stone Edge, Earthquake
---
Thanks Again!