FML. Typed this whole post up then lost it about 75% through. I apologize for any brevity, but I'll still try to go far in depth. I love UU, please help me make my team better! I'm trying every day to refine my team and get better step by step. A fresh eye and an open mind can help me make improvements in my team!
Alakazam
EVs: 4 HP / 252 SpA / 252 Spe
Nature: Timid
Item: Focus Sash
Ability: Inner Focus
~Taunt
~Psychic
~Focus Blast
~Signal Beam
Function: Speedy and powerful lead. Taunt predictable setups (Uxie, for instance) and then blast away. Prediction is important because gunning off a psychic/focus blast can give the opponent a free switch in to a dark/ghost type. He works wonders in the lead spot. Spiritomb gives him some trouble because of Alakazam's physical frailty and weakness to dark/ghost. Other than that he sticks it to a lot of common leads.
Venusaur
EVs: 4 HP /252 Atk / 252 Spe
Nature: Jolly
Item: Life Orb
Ability: Overgrow
~Swords Dance
~Sleep Powder
~Power Whip
~Earthquake
Function: Switch in to something he counters, Sleep Powder the switch in, setup and blast away. I like this guy because a lot of stat boosters (NP Mismagius, DD Feraligatr) are predictable. Venusaur is frequently seen rocking his Special set, but this one can catch people off guard. A wrong move can allow Venusaur the momentum to start a late game sweep once his speedier counters are dealt with. He's blatantly OU in the UU environment, and it's for good reason.
Blaziken
EVs: 4 Atk / 252 SpA / 252 Spe
Nature: Mild
Item: Life Orb
Ability: Blaze
~Flare Blitz
~Superpower
~Hidden Power [Electric]
~Vacuum Wave
Function: Wallbreaker, this guy can slam a hole into many of the common walls in UU such as Registeel and Steelix. He's great for OHKOing Weezing as well.
Spiritomb
EVs: 252 HP / 252 Attack / 4 Defense
Nature: Adamant
Item: Leftovers
Ability: Pressure
~Will-O-Wisp
~Shadow Sneak
~Sucker Punch
~Pursuit
Function: Spiritomb can grab free switch ins when I predict Normal, Fighting, or Psychic moves. With this, he can Will-O-Wisp and neuter the physical Pokemon of UU. Getting a DD Feraligatr with a burn is priceless.
Donphan
EVs: 52 HP / 252 Attack / 204 Defense
Nature: Adamant
Item: Leftovers
Ability: Sturdy
~Rapid Spin
~Earthquake
~Stealth Rock
~Ice Shard
Function: Ice Shard is my jam when Altaria and Sceptile come into play. STAB Earthquake is my fail-safe when Drapion rears his ugly head. Rapid Spin for utility. If I play this guy right, he's a wonderful asset. If I play him wrong, he's dead and useless. Stealth Rocks help grab some important OHKOs
Milotic
EVs: 248HP / 8 Speed / 252 Defense
Nature: Bold
Item: Leftovers
Ability: Marvel Scale
~Haze
~Ice Beam
~Surf
~Recover
Function: Milotic is so popular nowadays and it is for a reason. She soaks up hits like it's her job (well, it is). I switched HP Grass for Ice Beam in an effort to counter the grassers who try and scare her out.
So that's my team. Many, if not all of the builds, are straight off of the Smogon sets. Nothing in particular is extremely new or innovative in my team. Rather, I'm trying to piece together six different Pokemon in unique ways to make a powerful force. Any comments, questions, or suggestions would be greatly appreciated, and I would be in your debt! Have at it guys, and thanks in advance!

EVs: 4 HP / 252 SpA / 252 Spe
Nature: Timid
Item: Focus Sash
Ability: Inner Focus
~Taunt
~Psychic
~Focus Blast
~Signal Beam
Function: Speedy and powerful lead. Taunt predictable setups (Uxie, for instance) and then blast away. Prediction is important because gunning off a psychic/focus blast can give the opponent a free switch in to a dark/ghost type. He works wonders in the lead spot. Spiritomb gives him some trouble because of Alakazam's physical frailty and weakness to dark/ghost. Other than that he sticks it to a lot of common leads.

EVs: 4 HP /252 Atk / 252 Spe
Nature: Jolly
Item: Life Orb
Ability: Overgrow
~Swords Dance
~Sleep Powder
~Power Whip
~Earthquake
Function: Switch in to something he counters, Sleep Powder the switch in, setup and blast away. I like this guy because a lot of stat boosters (NP Mismagius, DD Feraligatr) are predictable. Venusaur is frequently seen rocking his Special set, but this one can catch people off guard. A wrong move can allow Venusaur the momentum to start a late game sweep once his speedier counters are dealt with. He's blatantly OU in the UU environment, and it's for good reason.

EVs: 4 Atk / 252 SpA / 252 Spe
Nature: Mild
Item: Life Orb
Ability: Blaze
~Flare Blitz
~Superpower
~Hidden Power [Electric]
~Vacuum Wave
Function: Wallbreaker, this guy can slam a hole into many of the common walls in UU such as Registeel and Steelix. He's great for OHKOing Weezing as well.

EVs: 252 HP / 252 Attack / 4 Defense
Nature: Adamant
Item: Leftovers
Ability: Pressure
~Will-O-Wisp
~Shadow Sneak
~Sucker Punch
~Pursuit
Function: Spiritomb can grab free switch ins when I predict Normal, Fighting, or Psychic moves. With this, he can Will-O-Wisp and neuter the physical Pokemon of UU. Getting a DD Feraligatr with a burn is priceless.

EVs: 52 HP / 252 Attack / 204 Defense
Nature: Adamant
Item: Leftovers
Ability: Sturdy
~Rapid Spin
~Earthquake
~Stealth Rock
~Ice Shard
Function: Ice Shard is my jam when Altaria and Sceptile come into play. STAB Earthquake is my fail-safe when Drapion rears his ugly head. Rapid Spin for utility. If I play this guy right, he's a wonderful asset. If I play him wrong, he's dead and useless. Stealth Rocks help grab some important OHKOs

EVs: 248HP / 8 Speed / 252 Defense
Nature: Bold
Item: Leftovers
Ability: Marvel Scale
~Haze
~Ice Beam
~Surf
~Recover
Function: Milotic is so popular nowadays and it is for a reason. She soaks up hits like it's her job (well, it is). I switched HP Grass for Ice Beam in an effort to counter the grassers who try and scare her out.
So that's my team. Many, if not all of the builds, are straight off of the Smogon sets. Nothing in particular is extremely new or innovative in my team. Rather, I'm trying to piece together six different Pokemon in unique ways to make a powerful force. Any comments, questions, or suggestions would be greatly appreciated, and I would be in your debt! Have at it guys, and thanks in advance!