My first attempt at a competitive team:
Lead:
Azelf@Colbur Berry **
Ability: Levitate
Jolly Nature
EV: 8 HP/140 Att/144 SpD/252 Spe
Taunt
Stealth Rock
U-Turn
Explosion
This is the guy who sets up stealth rock, while trying to stop the opponent from doing so. 361 speed thanks to 31 speed IV, so try to use taunt on first turn unless it is something like an infernape fake out. He then sets up stealth rock, and usually explodes.
Pretty powerful explosion, made better thanks to 140 Att. EV present.
Wall Breaker:
Salamence@life orb ** Gulf
Ability: Intimidate
Naive Nature
EV: 232 Att./24 Sp.Att/252 Spe
Dragon Dance
Outrage
Earthquake
Fire Blast
Salamence hits from both sides of the spectrum. I wanted a DD poke as I have no TTar or Gyara, and I chose Salamence over Dragonite. Fire blast is for skarmory, however I have been debating putting in roost instead and breeding a jolly mence. Thanks to outrage and 364 attack stat, this thing hits hard, especially after dancing. It is popular for a very good reason.
The nickname comes from the colour of Salamence. Its blue and orange is reminiscent of the Gulf Racing colours: http://www.lmcl.co.uk/images/gt40a.jpg
Status/Staller:
Dusknoir@leftovers ** BigDaddy
Ability: Pressure
Impish Nature
EV: 252 HP/40 Att./216 Def
Will-O-Wisp
Pain Split
Earthquake
Thunderpunch
This guy has excellent defences and is immune to ground/fighting attacks which are commonplace. Max HP EV as his base state is fairly weak. WoW cuts opponents attack aswell as cutting into their HP. Pain split is quite an impressive move as it is both offensive and defensive, which can help a lot. Earthquake is a given on Dusknoir as it is one of the best moves in the game full stop. Thunderpunch to deal with gyarados, which combined with jirachi gives me three elemental punches. Plus, I have wanted to use Dusknoir since the release of Diamond, he looks pretty cool, like an evil genie. This is my main reason in choosing him over Rotom-H/Rotom-A
The name is fairly lousy, just sprang to mind when training him.
Scout:
Scizor@choice band ** TheFly
Ability: Technician
Adamant Nature
EV: 248 HP/252 Att./8 Spe
Bullet Punch
U-Turn
Superpower
Pursuit
This poke is seen on many teams, nearly all of whom use this set. Nothing original whatsoever. Used this guy in battle tower with sub/sd/bp/superpower and it worked wonders. Since then, I have realised how good he can be, especially with bullet punch making up for his lack of speed. I can use u-turn to scout out the opponent, aswell as dealing some damage. Choice band makes his already impressive attack stat almost unthinkable.
The name "TheFly" is a name hailing from two places. My old bicycle is a raleigh stonefly, nicknamed "The Fly", which combines excellently with scizor's appearance. Thus the name "TheFly" came about.
Staller:
Suicune@leftovers ** BlueDawg
Ability: Pressure
Bold Nature
EV: 252 HP/252 Def/4 S.Def
Calm Mind
Surf
Rest
Sleep Talk
I believe this guy is called Crocune. There is a possibility that I will change sleep talk to ice beam, however I have not yet made up my mind. He is as good a bulky water type as you will find, with 115 base defences. His nature and EV spread, aswell as calm mind means he can take hits from both types of attack. He can also PP stall with his ability, pressure. This is also achieved with dusknoir.
Name needs improvement.
Late-Game Sweeper:
Lucario@life orb ** Goodbye
Ability: Inner Focus
Adamant Nature
EV: 4 HP/252 Att./252 Spe
Swords Dance
Extremespeed
Close Combat
Ice Punch
New addition. Swords dance on the switch or against slower pokemon that can't KO him. Ice punch over crunch/ bullet punch to deal with dragons and such. Pretty devastating if he has set up, but can die quickly with SR and life orb damage...
Any comments much appreciated. Nothing out of the ordinary, except nicknames that is.
All sets are pretty standard, more curious about synergy and threats and such...
Thanks in advance.
Lead:

Azelf@Colbur Berry **
Ability: Levitate
Jolly Nature
EV: 8 HP/140 Att/144 SpD/252 Spe
Taunt
Stealth Rock
U-Turn
Explosion
This is the guy who sets up stealth rock, while trying to stop the opponent from doing so. 361 speed thanks to 31 speed IV, so try to use taunt on first turn unless it is something like an infernape fake out. He then sets up stealth rock, and usually explodes.
Pretty powerful explosion, made better thanks to 140 Att. EV present.
Wall Breaker:

Salamence@life orb ** Gulf
Ability: Intimidate
Naive Nature
EV: 232 Att./24 Sp.Att/252 Spe
Dragon Dance
Outrage
Earthquake
Fire Blast
Salamence hits from both sides of the spectrum. I wanted a DD poke as I have no TTar or Gyara, and I chose Salamence over Dragonite. Fire blast is for skarmory, however I have been debating putting in roost instead and breeding a jolly mence. Thanks to outrage and 364 attack stat, this thing hits hard, especially after dancing. It is popular for a very good reason.
The nickname comes from the colour of Salamence. Its blue and orange is reminiscent of the Gulf Racing colours: http://www.lmcl.co.uk/images/gt40a.jpg
Status/Staller:

Dusknoir@leftovers ** BigDaddy
Ability: Pressure
Impish Nature
EV: 252 HP/40 Att./216 Def
Will-O-Wisp
Pain Split
Earthquake
Thunderpunch
This guy has excellent defences and is immune to ground/fighting attacks which are commonplace. Max HP EV as his base state is fairly weak. WoW cuts opponents attack aswell as cutting into their HP. Pain split is quite an impressive move as it is both offensive and defensive, which can help a lot. Earthquake is a given on Dusknoir as it is one of the best moves in the game full stop. Thunderpunch to deal with gyarados, which combined with jirachi gives me three elemental punches. Plus, I have wanted to use Dusknoir since the release of Diamond, he looks pretty cool, like an evil genie. This is my main reason in choosing him over Rotom-H/Rotom-A
The name is fairly lousy, just sprang to mind when training him.
Scout:

Scizor@choice band ** TheFly
Ability: Technician
Adamant Nature
EV: 248 HP/252 Att./8 Spe
Bullet Punch
U-Turn
Superpower
Pursuit
This poke is seen on many teams, nearly all of whom use this set. Nothing original whatsoever. Used this guy in battle tower with sub/sd/bp/superpower and it worked wonders. Since then, I have realised how good he can be, especially with bullet punch making up for his lack of speed. I can use u-turn to scout out the opponent, aswell as dealing some damage. Choice band makes his already impressive attack stat almost unthinkable.
The name "TheFly" is a name hailing from two places. My old bicycle is a raleigh stonefly, nicknamed "The Fly", which combines excellently with scizor's appearance. Thus the name "TheFly" came about.
Staller:

Suicune@leftovers ** BlueDawg
Ability: Pressure
Bold Nature
EV: 252 HP/252 Def/4 S.Def
Calm Mind
Surf
Rest
Sleep Talk
I believe this guy is called Crocune. There is a possibility that I will change sleep talk to ice beam, however I have not yet made up my mind. He is as good a bulky water type as you will find, with 115 base defences. His nature and EV spread, aswell as calm mind means he can take hits from both types of attack. He can also PP stall with his ability, pressure. This is also achieved with dusknoir.
Name needs improvement.
Late-Game Sweeper:

Lucario@life orb ** Goodbye
Ability: Inner Focus
Adamant Nature
EV: 4 HP/252 Att./252 Spe
Swords Dance
Extremespeed
Close Combat
Ice Punch
New addition. Swords dance on the switch or against slower pokemon that can't KO him. Ice punch over crunch/ bullet punch to deal with dragons and such. Pretty devastating if he has set up, but can die quickly with SR and life orb damage...
Any comments much appreciated. Nothing out of the ordinary, except nicknames that is.
All sets are pretty standard, more curious about synergy and threats and such...
Thanks in advance.