Sorry about the little mishap (I don't mean to to be condesending, but: [mis-hap, mis-hap]) about my last OU RTM, this one is different, so please, enjoy!
Speed Deoxys
Evs: 252 Att/252 Spe/4 Def
Item: Focus Sash
Moves:
~Stealth Rock
~Spikes
~Taunt
~Superpower
Nature: Jolly (+Spe, -SpA)
Deoxys is one of the, if not the, best hazard lead. I will almost always start with Deoxys, unless I see an obvious Rapid Spinner, in which case, I take out the opponents Rapid Spinner, and then send in Deoxys to do some damage. Focus Sash is an obvious choice for a sweeper with frail defenses, as it gives them a second chance to attack. Jolly is a somewhat obvious choice, making it the fastest Pokemon in the game.
Stealth Rock is an amazing entry hazard, taking a lot of damage from the opponent, and getting it in as the first move is even better. Spikes is also pretty good. Get a Stealth Rock and Spikes level 3 and my opponent is screwed. Taunt is if anybody else has a hazard lead in mind. Superpower is just an attack move, though I rarely get to use it.
Although, technically, Deoxys rarely gets to sweep, it is still important to my team. It helps the rest of my team wither away the opponents health. For my sweepers, my opponent might switch out, thinking I have a super-effective move, giving me an advantage. For my walls and tanks, my opponent might switch out to something that would better defeat it, giving me an advantage. So, as you can see, my team greatly appreciates Deoxys's help.
Blissey (F) @ Leftovers
Trait: Natural Cure
EVs: 252 HP / 252 Def / 4 Sp. Def
Bold Nature (+Def, -Atk)
~ Flamethrower
~ Wish
~ Protect
~ Toxic
Blissey is an obvious pro (as opposed to con) to my team. Sometimes, when I need that extra health for my teammate, I can have it. The most common example is when somebody takes Deoxys to 1 HP on the first turn. Then I switch out, defeat the potential Deoxys KO'er, and wish Deoxys back to health so I can get 2 or 3 more moves in. And, with these Evs, she can finally survive 1 or 2 physical attacks.
Leftovers is a great choice for Blissey, also showing one its advantages over Eviolite Chansey. Naural Cure is great for when she has status conditions, which seems to be often. Bold is so she can survive some physical attacks.
Flamethrower is an attack move Blissey can use when its not healing, giving a status condition, or using protect. Its usable special attack is also another advantage Blissey has over Eviolite Chansey. Wish is for healing support of my team and herself. Protect is good to get a 100% chance of healing after wish, and also good to see what type of attack my opponent is using. Toxic is for stalling.
Blissey can be truly amazing sometimes. Once, my opponent got me down to my last Pokémon, Blissey, 6 to 1, but then I beat all 6 of his Pokémon with JUST Blissey.
'jus sayin.
Terrakion @ Life orb
Ability: Justified
EVs: 252 Att/252 Spe/4 HP
Jolly nature (+Spe , -Sp. Att)
~ Rock Polish
~ Swords Dance
~ Stone Edge
~ Close Combat
Life Orb is awesome, making its attacks way more powerful, making it a very effective sweeper. He needs speed more than attack, so Jolly is good.
With team preview, I can see if the opposing team is mostly faster or slower than Terrakion. if they're slower, I use Swords Dance, if they're faster, I use Rock Polish. Stone Edge, when I'm not depending on accuracy, is an awesome STAB move. Close Combat is also good for when I need accuracy, or fighting fellow Rock types.
I really don't have to say much about how he fits in to my team. He is simply a beastly physical sweeper, and can sometimes even get a speed and/or attack stat of over 1000. Sometimes, even the best of walls can't beat little Terrokion.
Tangrowth (F)
Evs: 252 Def/252 HP/4 Att
Item: Leftovers
Nature: Impish (+Def, - Sp. Att)
Ability: Regenerator
Moves:
~Sleep Powder
~Power Whip
~Earthquake
~Leech Seed
Leftovers is obvious. So is Impish. Regenerator is probably the best ability for a tank or wall to have. Have low health? Then just switch out, and around 1/3 or it is healed. Awesome.
Sleep Powder is great to help me where down my opponents health. Power Whip is an awesome STAB move, with a base power of 180. EArhtquake is also a powerful move to use against Fire types. Leech seed lets Tangrowth regenerate even more health.
Tangrowth is simply beast. He is pretty much the best wall I can ask for. Sometimes, my teams can be easily defeated by a physical sweeper. Not here. The pumped up sweepers that will completely crush Deoxys, Blissey, Terrakion, Chandalure, and sometimes even Brozong, all in one, will barely take 20 HP from good old Tangrowth. He's also good if my team needs an opponent to be put to sleep, so we can chip away (no, not the move) their health.
Chandelure (M) @ Expert Belt
Trait: Flash Fire
EVs: 4 HP / 252 SAtk / 252 Spd
Modest Nature (+Sp Att, -Att)
Moveset:
~ Hidden Power [Ground]
~ Flamethrower
~ Energy Ball
~ Taunt
Expert Belt really powers up those super effective moves, and that happens a lot with Chandalure. Flash fire is great is awesome, making his special attack raise with every fire move that hits him.
Hidden power is good for other Fire types, and unsuspecting Rock types. Flamethrower is a good STAB move with awesome accuracy. Energy ball gets Rock types, Ground types, Water types, so many of his weaknesses, and is just a good move in general. Taunt is to prevent set up sweeps.
Sometimes, there is a wall that the rest of my team just can't take. This is my solution. With Taunt, and the other attacking moves on this baby, no wall stands a chance. As an added bonus, with taunt he also prevents set up sweeps
Thanks Obbmud99 for this idea. Obbmud99's team
Reuniclus @ Life Orb
Trait: Magic Guard
EVs: 192 HP / 64 Def / 252 SAtt
Quiet Nature (+SAtt, -Spd)
~ Trick Room
~ Psychic
~ Focus Blast
~ Shadow Ball
Reuniclus is probably the best Trick Room-er. Life Orb is for that amazing extra power. Magic Guard is so I am immune to entry hazards, as i don't have a Rapid Spinner on my team. Because I don't need speed, the HP and Defense are helpful extras to this sweeper.
Trick Room is obviously a good choice, as it makes Reuniclus one the fastest Pokemon in the game. Psychic has a great power and accuracy, getting to a bonus 135 base power. Focus Blast is for when I can't use Psychic (such as fighting a Dark type), and don't need the accuracy, for raw power. Shadow ball is a good special move for other Psychic types.
Reuniclus is my second hand special sweeper, for when Chandalure is either defeated or out-sped. It is also a good tank.
Also make sure to check out my RarelyUsed team (in my signature)

Speed Deoxys
Evs: 252 Att/252 Spe/4 Def
Item: Focus Sash
Moves:
~Stealth Rock
~Spikes
~Taunt
~Superpower
Nature: Jolly (+Spe, -SpA)
Deoxys is one of the, if not the, best hazard lead. I will almost always start with Deoxys, unless I see an obvious Rapid Spinner, in which case, I take out the opponents Rapid Spinner, and then send in Deoxys to do some damage. Focus Sash is an obvious choice for a sweeper with frail defenses, as it gives them a second chance to attack. Jolly is a somewhat obvious choice, making it the fastest Pokemon in the game.
Stealth Rock is an amazing entry hazard, taking a lot of damage from the opponent, and getting it in as the first move is even better. Spikes is also pretty good. Get a Stealth Rock and Spikes level 3 and my opponent is screwed. Taunt is if anybody else has a hazard lead in mind. Superpower is just an attack move, though I rarely get to use it.
Although, technically, Deoxys rarely gets to sweep, it is still important to my team. It helps the rest of my team wither away the opponents health. For my sweepers, my opponent might switch out, thinking I have a super-effective move, giving me an advantage. For my walls and tanks, my opponent might switch out to something that would better defeat it, giving me an advantage. So, as you can see, my team greatly appreciates Deoxys's help.

Blissey (F) @ Leftovers
Trait: Natural Cure
EVs: 252 HP / 252 Def / 4 Sp. Def
Bold Nature (+Def, -Atk)
~ Flamethrower
~ Wish
~ Protect
~ Toxic
Blissey is an obvious pro (as opposed to con) to my team. Sometimes, when I need that extra health for my teammate, I can have it. The most common example is when somebody takes Deoxys to 1 HP on the first turn. Then I switch out, defeat the potential Deoxys KO'er, and wish Deoxys back to health so I can get 2 or 3 more moves in. And, with these Evs, she can finally survive 1 or 2 physical attacks.
Leftovers is a great choice for Blissey, also showing one its advantages over Eviolite Chansey. Naural Cure is great for when she has status conditions, which seems to be often. Bold is so she can survive some physical attacks.
Flamethrower is an attack move Blissey can use when its not healing, giving a status condition, or using protect. Its usable special attack is also another advantage Blissey has over Eviolite Chansey. Wish is for healing support of my team and herself. Protect is good to get a 100% chance of healing after wish, and also good to see what type of attack my opponent is using. Toxic is for stalling.
Blissey can be truly amazing sometimes. Once, my opponent got me down to my last Pokémon, Blissey, 6 to 1, but then I beat all 6 of his Pokémon with JUST Blissey.
'jus sayin.

Terrakion @ Life orb
Ability: Justified
EVs: 252 Att/252 Spe/4 HP
Jolly nature (+Spe , -Sp. Att)
~ Rock Polish
~ Swords Dance
~ Stone Edge
~ Close Combat
Life Orb is awesome, making its attacks way more powerful, making it a very effective sweeper. He needs speed more than attack, so Jolly is good.
With team preview, I can see if the opposing team is mostly faster or slower than Terrakion. if they're slower, I use Swords Dance, if they're faster, I use Rock Polish. Stone Edge, when I'm not depending on accuracy, is an awesome STAB move. Close Combat is also good for when I need accuracy, or fighting fellow Rock types.
I really don't have to say much about how he fits in to my team. He is simply a beastly physical sweeper, and can sometimes even get a speed and/or attack stat of over 1000. Sometimes, even the best of walls can't beat little Terrokion.

Tangrowth (F)
Evs: 252 Def/252 HP/4 Att
Item: Leftovers
Nature: Impish (+Def, - Sp. Att)
Ability: Regenerator
Moves:
~Sleep Powder
~Power Whip
~Earthquake
~Leech Seed
Leftovers is obvious. So is Impish. Regenerator is probably the best ability for a tank or wall to have. Have low health? Then just switch out, and around 1/3 or it is healed. Awesome.
Sleep Powder is great to help me where down my opponents health. Power Whip is an awesome STAB move, with a base power of 180. EArhtquake is also a powerful move to use against Fire types. Leech seed lets Tangrowth regenerate even more health.
Tangrowth is simply beast. He is pretty much the best wall I can ask for. Sometimes, my teams can be easily defeated by a physical sweeper. Not here. The pumped up sweepers that will completely crush Deoxys, Blissey, Terrakion, Chandalure, and sometimes even Brozong, all in one, will barely take 20 HP from good old Tangrowth. He's also good if my team needs an opponent to be put to sleep, so we can chip away (no, not the move) their health.

Chandelure (M) @ Expert Belt
Trait: Flash Fire
EVs: 4 HP / 252 SAtk / 252 Spd
Modest Nature (+Sp Att, -Att)
Moveset:
~ Hidden Power [Ground]
~ Flamethrower
~ Energy Ball
~ Taunt
Expert Belt really powers up those super effective moves, and that happens a lot with Chandalure. Flash fire is great is awesome, making his special attack raise with every fire move that hits him.
Hidden power is good for other Fire types, and unsuspecting Rock types. Flamethrower is a good STAB move with awesome accuracy. Energy ball gets Rock types, Ground types, Water types, so many of his weaknesses, and is just a good move in general. Taunt is to prevent set up sweeps.
Sometimes, there is a wall that the rest of my team just can't take. This is my solution. With Taunt, and the other attacking moves on this baby, no wall stands a chance. As an added bonus, with taunt he also prevents set up sweeps
Thanks Obbmud99 for this idea. Obbmud99's team

Reuniclus @ Life Orb
Trait: Magic Guard
EVs: 192 HP / 64 Def / 252 SAtt
Quiet Nature (+SAtt, -Spd)
~ Trick Room
~ Psychic
~ Focus Blast
~ Shadow Ball
Reuniclus is probably the best Trick Room-er. Life Orb is for that amazing extra power. Magic Guard is so I am immune to entry hazards, as i don't have a Rapid Spinner on my team. Because I don't need speed, the HP and Defense are helpful extras to this sweeper.
Trick Room is obviously a good choice, as it makes Reuniclus one the fastest Pokemon in the game. Psychic has a great power and accuracy, getting to a bonus 135 base power. Focus Blast is for when I can't use Psychic (such as fighting a Dark type), and don't need the accuracy, for raw power. Shadow ball is a good special move for other Psychic types.
Reuniclus is my second hand special sweeper, for when Chandalure is either defeated or out-sped. It is also a good tank.
Also make sure to check out my RarelyUsed team (in my signature)