Hello all! I'm here today to put up a UU team I've made that has done pretty well so far. I'm just looking for some tips on how to improve it.
So, without further ado, on to the team!
Qwilfish @ Black Sludge
Intimidate
252 HP/200 Def/52 Spe
Impish (- SpA, + Def)
~Spikes
~Pain Split
~Waterfall
~Haze
A little unorthodox, but very effective. Replacing Hitmontop, Qwilfish brings a lot of great qualities to the table: Intimidate, good bulk, entry hazards, Haze, Fighting and Bug resistance, etc. He's damn good at what he does.
The EVs allow Qwilfish to outspend uninvested base 90s and Victini after a V-create. Spikes add more residual damage, Pain Split gives me semi-reliable recovery, Waterfall is solid STAB, and Haze stops setup and Baton Pass.
Arcanine @ Leftovers
Intimidate
248 HP/252 Def/8 Spe
Bold (- Atk, + Def)
~Flamethrower
~Hidden Power Grass
~Will-O-Wisp
~Morning Sun
The second member of my physical defense core, Arcanine. He's damn good at what he does; he can wall Heracross, other Arcanine, and many others, especially with Intimidate. The HP EVs let him switch into Rocks four times and still live, while the other 8 go into Speed. Flamethrower is for reliable STAB, Hidden Power Grass 2HKO's all Rhyperior and hits bulky Water types. Will-O-Wisp helps with the walling, and Morning Sun heals, obviously.
I'm contemplating putting Extremespeed instead of Hidden Power Grass, but the ability to hit Rhyperior is too good to pass up. I know that after an Intimidate, Arcanine can live an Earthquake, so that's pretty awesome. If Rhyperior usage goes down then maybe, because my team lacks priority.
Bronzong @ Leftovers
Heatproof
252 HP/4 Atk/252 SpD
Sassy (- Spe, + SpD)
~Stealth Rock
~Gyro Ball
~Earthquake
~Toxic
Part one of the specially defensive team. Bronzong is here for SR, and to check certain threats such as Kingdra and Togekiss. The choice of Heatproof over Levitate is simple; people are so accustomed to seeing Levitate, nobody Earthquakes on Bronzong. Chandelure can't 2HKO with Fire Blast, and Earthquake kicks its teeth in. Rhyperior is handled by Hitmontop and Arcanine, and Flygon too. The EVs and Nature are standard. SR because I love me some free damage, Gyro Ball hurts Froslass and Heracross, Earthquake for Steel and Fire types.
Xatu @ Light Clay
Magic Bounce
252 HP/4 Atk/252 Spe
Jolly (- SpA, + Spe)
~Reflect
~Light Screen
~Roost
~U-turn
Ah, Xatu. Magic Bounce was a godsend for this thing. Not only can I keep hazards off my side of the field, but I can set up screens as well. Max HP and Speed let me get my screens up fast, and give me some good bulk. Obviously, Reflect and Light Screen help my team tank hits more efficiently, and help Porygon2 get some good damage in. Roost recovers my HP while taking away my big weaknesses, and U-turn gives me momentum.
Just some random calcs with screens up:
* -1 252+ Atk Choice Band Rhyperior Stone Edge vs. 248 HP / 252+ Def Arcanine through Reflect: 159-187 (41.51 - 48.82%) -- guaranteed 3HKO
* 252 Atk Victini V-create vs. 252 HP / 4 Def Heatproof Bronzong through Reflect: 109-129 (32.24 - 38.16%) -- 0.85% chance to 3HKO
* +2 252 SpA Life Orb Mew Aura Sphere vs. 252 HP / 252+ SpD Umbreon through Light Screen: 127-151 (32.23 - 38.32%) -- 2.05% chance to 3HKO
Yeah, huuuuge difference.
Umbreon @ Leftovers
Synchronize
252 HP/4 Def/252 SpD
Careful (- SpA, + SpD)
~Wish
~Protect
~Foul Play
~Heal Bell
Part two of my special defensive core, the one and only Umbreon. Umbreon's job is to heal the team, through Wish and Heal Bell. It can also do a number to physical attackers with Foul Play; it 2HKOs Flygon and 3HKOs Heracross. The EVs and Nature give me the highest SpD possible. Wish and Protect give me healing for myself and my teammates who can't heal, such as Bronzong. Foul Play deals with some physical attackers, and Heal Bell takes away threatening status conditions, like if Qwilfish were burned or Arcanine were poisoned.
I'm thinking of swapping Foul Play for Toxic, but I'm not sure yet. If Rhyperior, Flygon, and Darmanitan drop in usage, I just might.
Porygon2 @ Eviolite
Trace
252 HP/4 Def/252 SpD
Calm (- Atk, + SpD)
~Toxic
~Discharge
~Ice Beam
~Recover
If anything can counter Chandelure, it's this guy. Choosing a full special defensive spread, I can now handle big threats to my team such as Chandelure, Houndoom, Arcanine, etc. The EVs and Nature pump up my special defense to insane levels. Toxic because I can't get enough of it, BoltBeam because they have good coverage, and Recover because recovery is always nice.
So yeah, that's the team. Comment below with suggestions. Thanks a bunch!
*threat list coming soon
So, without further ado, on to the team!

Qwilfish @ Black Sludge
Intimidate
252 HP/200 Def/52 Spe
Impish (- SpA, + Def)
~Spikes
~Pain Split
~Waterfall
~Haze
A little unorthodox, but very effective. Replacing Hitmontop, Qwilfish brings a lot of great qualities to the table: Intimidate, good bulk, entry hazards, Haze, Fighting and Bug resistance, etc. He's damn good at what he does.
The EVs allow Qwilfish to outspend uninvested base 90s and Victini after a V-create. Spikes add more residual damage, Pain Split gives me semi-reliable recovery, Waterfall is solid STAB, and Haze stops setup and Baton Pass.

Arcanine @ Leftovers
Intimidate
248 HP/252 Def/8 Spe
Bold (- Atk, + Def)
~Flamethrower
~Hidden Power Grass
~Will-O-Wisp
~Morning Sun
The second member of my physical defense core, Arcanine. He's damn good at what he does; he can wall Heracross, other Arcanine, and many others, especially with Intimidate. The HP EVs let him switch into Rocks four times and still live, while the other 8 go into Speed. Flamethrower is for reliable STAB, Hidden Power Grass 2HKO's all Rhyperior and hits bulky Water types. Will-O-Wisp helps with the walling, and Morning Sun heals, obviously.
I'm contemplating putting Extremespeed instead of Hidden Power Grass, but the ability to hit Rhyperior is too good to pass up. I know that after an Intimidate, Arcanine can live an Earthquake, so that's pretty awesome. If Rhyperior usage goes down then maybe, because my team lacks priority.

Bronzong @ Leftovers
Heatproof
252 HP/4 Atk/252 SpD
Sassy (- Spe, + SpD)
~Stealth Rock
~Gyro Ball
~Earthquake
~Toxic
Part one of the specially defensive team. Bronzong is here for SR, and to check certain threats such as Kingdra and Togekiss. The choice of Heatproof over Levitate is simple; people are so accustomed to seeing Levitate, nobody Earthquakes on Bronzong. Chandelure can't 2HKO with Fire Blast, and Earthquake kicks its teeth in. Rhyperior is handled by Hitmontop and Arcanine, and Flygon too. The EVs and Nature are standard. SR because I love me some free damage, Gyro Ball hurts Froslass and Heracross, Earthquake for Steel and Fire types.
Xatu @ Light Clay
Magic Bounce
252 HP/4 Atk/252 Spe
Jolly (- SpA, + Spe)
~Reflect
~Light Screen
~Roost
~U-turn
Ah, Xatu. Magic Bounce was a godsend for this thing. Not only can I keep hazards off my side of the field, but I can set up screens as well. Max HP and Speed let me get my screens up fast, and give me some good bulk. Obviously, Reflect and Light Screen help my team tank hits more efficiently, and help Porygon2 get some good damage in. Roost recovers my HP while taking away my big weaknesses, and U-turn gives me momentum.
Just some random calcs with screens up:
* -1 252+ Atk Choice Band Rhyperior Stone Edge vs. 248 HP / 252+ Def Arcanine through Reflect: 159-187 (41.51 - 48.82%) -- guaranteed 3HKO
* 252 Atk Victini V-create vs. 252 HP / 4 Def Heatproof Bronzong through Reflect: 109-129 (32.24 - 38.16%) -- 0.85% chance to 3HKO
* +2 252 SpA Life Orb Mew Aura Sphere vs. 252 HP / 252+ SpD Umbreon through Light Screen: 127-151 (32.23 - 38.32%) -- 2.05% chance to 3HKO
Yeah, huuuuge difference.

Umbreon @ Leftovers
Synchronize
252 HP/4 Def/252 SpD
Careful (- SpA, + SpD)
~Wish
~Protect
~Foul Play
~Heal Bell
Part two of my special defensive core, the one and only Umbreon. Umbreon's job is to heal the team, through Wish and Heal Bell. It can also do a number to physical attackers with Foul Play; it 2HKOs Flygon and 3HKOs Heracross. The EVs and Nature give me the highest SpD possible. Wish and Protect give me healing for myself and my teammates who can't heal, such as Bronzong. Foul Play deals with some physical attackers, and Heal Bell takes away threatening status conditions, like if Qwilfish were burned or Arcanine were poisoned.
I'm thinking of swapping Foul Play for Toxic, but I'm not sure yet. If Rhyperior, Flygon, and Darmanitan drop in usage, I just might.

Porygon2 @ Eviolite
Trace
252 HP/4 Def/252 SpD
Calm (- Atk, + SpD)
~Toxic
~Discharge
~Ice Beam
~Recover
If anything can counter Chandelure, it's this guy. Choosing a full special defensive spread, I can now handle big threats to my team such as Chandelure, Houndoom, Arcanine, etc. The EVs and Nature pump up my special defense to insane levels. Toxic because I can't get enough of it, BoltBeam because they have good coverage, and Recover because recovery is always nice.
So yeah, that's the team. Comment below with suggestions. Thanks a bunch!
*threat list coming soon