Counter that Pokémon

-Infernape w/Life Orb
Nature: Naive
Ability: Iron Fist
EVs: 180 Attack, 252 Speed, 76 Sp.Attack
Moves: Close Combat, Thunder Punch, Fire Blast, Hidden Power Ice

Chandelure @ Choice Scarf
Nature: Modest
Ability: Flash Fire
EV: 252 SpAtk, 252 Spd

Shadow Ball, Fire Blast, Energy Ball, Hidden Power Fighting

252+ SpA Chandelure Shadow Ball vs. 0 HP / 0- SpD Infernape: 229-271 (78.1 - 92.4%) -- guaranteed 2HKO

180 Atk Life Orb Infernape Thunder Punch vs. 0 HP / 0 Def Chandelure: 113-134 (43.2 - 51.3%) -- 4.7% chance to 2HKO

The other moves can't touch Chandy. Fire Blast gives her a boost.

Goodra @ Wide Lens
Nature: Jolly (+Spd, -SAtk)
Ability: Hydration
EV: 252 Atk, 252 Spd

Aqua Tail
Rock Slide
Rain Dance
Rest

Resists Fire Blast and Energy Ball, while high natural special defense will take the other two hits. Out-speeds and has two super-effective attacks with 100% accuracy thanks to Wide Lens.

Superstrength79 said:

Goodra @ Wide Lens
Nature: Jolly (+Spd, -SAtk)
Ability: Hydration
EV: 252 Atk, 252 Spd

Aqua Tail
Rock Slide
Rain Dance
Rest

Resists Fire Blast and Energy Ball, while high natural special defense will take the other two hits. Out-speeds and has two super-effective attacks with 100% accuracy thanks to Wide Lens.

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Lack of STAB hurts, you know; Goodra is supposed to take advantage of bulk, not Speed.

Anyway:
Chesnaught:

-Bulk Up
-Seed Bomb
-Hammer Arm
-Stone Edge
Nature: Adamant
EVs: 252 HP/252 Atk/4 SDef
Item: Leftovers
Ability: Bulletproof

Even though Bulk Up Chesnaught is impractical for OU standards (faces competition with Conkeldurr), it resists both of Goodra's moves, uses it as setup bait for Bulk Up and hits it hard with Hammer Arm.

-Skarmory w/Leftovers
Nature: Impish
Ability: Sturdy
EVs: 252 HP, 252 Defense, 4 Sp.Defense
Moves: Taunt, Brave Bird, Roost, Whirlwind

Hammer Arm is Chesnaught's best option vs Skarmory, but:
+1 252+ Atk Chesnaught Hammer Arm vs. 252 HP / 252+ Def Skarmory: 135-159 (40.4 - 47.6%) -- guaranteed 3HKO after Leftovers recovery

0 Atk Skarmory Brave Bird vs. +1 252 HP / 4 Def Chesnaught: 240-288 (63.1 - 75.7%) -- guaranteed 2HKO after Leftovers recovery

And the Skarm outspeeds Chesnaught too.

Magnezone @ Leftovers
Trait: Magnet Pull
EVs: 252 HP / 96 Def / 160 SDef
Calm Nature
- Substitute
- Thunder Wave
- Thunderbolt
- Hidden Power [Fire]

Thanks to Magnet Pull, it would get Skarmory stuck onto the field; it'd be unable to switch. Its defenses are not so bad either, so with the help of those, it should be able to endure a few hits struck by Skarmory. Finally, when it's all set, Magnezone could take Skarmory down with Thunderbolt.

Gigalith @ Custap Berry
Trait: Sturdy
EVs: 252 HP / 252 Atk / 4 SpD
Adamant Nature
- Earthquake
- Rock Blast
- Explosion
- Stealth Rock

0 SpA Magnezone Thunderbolt vs. 252 HP / 4 SpD Gigalith: 145-172 (38.7 - 45.9%) -- guaranteed 3HKO

252+ Atk Gigalith Earthquake vs. 252 HP / 96 Def Magnezone: 404-476 (117.4 - 138.3%) -- guaranteed OHKO

Easily comes in and can take 2 Tbolts from Magnezone without any issue, and OHKO back with EQ. An interesting thing about this set, is that unless Magnezone decides to use HP Fire on Gigalith for some reason, Custap Berry will activate on the next turn and allow Gigalith to explode in something's face! :D

Bronzong @ Choice Band
Trait: Levitate
EVs: 252 Atk / 252 HP / 4 SDef
Adamant Nature
- Earthquake
- Zen Headbutt
- Trick
- Gyro Ball

Gigalith stands no chance against Bronzong; the highest amount of damage it should be able to deal is by using Explosion.

252+ Atk Gigalith Explosion vs. 252 HP / 0 Def Bronzong: 135-159 (39.9 - 47%) -- guaranteed 3HKO
252 Atk Choice Band Bronzong Earthquake vs. 252 HP / 0 Def Gigalith: 202-238 (54 - 63.6%) -- guaranteed 2HKO

Arcanine (M) @ Air Balloon
Trait: Intimidate
EVs: 4 HP / 252 Atk / 252 Spd
Adamant Nature (+Atk, -SAtk)
- Flare Blitz
- Wild Charge
- Close Combat
- Extreme Speed

Upon switching in, Bronzong's Atk stat gets reduced by 1.

-1 252+ Atk Choice Band Bronzong Zen Headbutt vs. 4 HP / 0 Def Arcanine: 133-157 (41.3 - 48.7%) -- guaranteed 3HKO

252+ Atk Arcanine Flare Blitz vs. 252 HP / 0 Def Bronzong: 338-398 (100 - 117.7%) -- guaranteed OHKO

Nymphadora said:

Suicune @ Leftovers
Trait: Pressure
EVs: 252 HP / 252 Def / 4 SDef
Bold Nature (+Def, -Atk)
- Calm Mind
- Scald
- Rest
- Sleep Talk

Due to Choice Band, Rhyperior would be stuck to Stone Edge, which Suicune is bulky enough to endure. After it's sent out on the field, it would immediately use Scald and take down Rhyperior. If it's ever in low HP, it should always be able to recover itself with Rest. With Sleep Talk, it could continue attacking while it's asleep. :]

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Rhyperior can actually take a Scald and 2HKO with Stone Edge, so Suicune can't really switch in.


Anyway...

Hippowdon @ Leftovers
Trait: Sand Stream
EVs: 252 HP / 4 Atk / 252 Def
Impish Nature
- Earthquake
- Slack Off
- Stealth Rock
- Ice Fang

This Hippowdon can take a Flare Blitz with ease (34.5% MAX), is immune to Wild Charge, and can 2HKO Arcanine easily with Earthquake.

Crobatrulez20 said:

Rhyperior can actually take a Scald and 2HKO with Stone Edge, so Suicune can't really switch in.

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The 2HKO is not guaranteed.

140+ Atk Choice Band Rhyperior Stone Edge vs. 252 HP / 252+ Def Suicune: 172-204 (42.5 - 50.4%) -- guaranteed 3HKO after Leftovers recovery

If Scald manages to burn Rhyperior, Stone Edge will deal lesser damage. Not only that, Scald has a 25% chance to OHKO Rhyperior.

0 SpA Suicune Scald vs. 252 HP / 0 SpD Solid Rock Rhyperior: 381-453 (87.7 - 104.3%) -- 25% chance to OHKO


Rotom-W @ Choice Scarf
Trait: Levitate
EVs: 4 HP / 252 SAtk / 252 Spd
Timid Nature (+Spd, -Atk)
- Volt Switch
- Hydro Pump
- Hidden Power [Ice]
- Trick

Doesn't need much explanation.

Jin Of The Gale said:

Rotom-W @ Choice Scarf
Trait: Levitate
EVs: 4 HP / 252 SAtk / 252 Spd
Timid Nature (+Spd, -Atk)
- Volt Switch
- Hydro Pump
- Hidden Power [Ice]
- Trick

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Lanturn @ Assault Vest
Ability: Volt Absorb
Nature: Modest (+SAtk, -Atk)
EVs: 252 SAtk, 252 Spd

Volt Switch
Ice Beam
Hidden Power (Grass)
Scald

Resists or absorbs all of the attacks. Spams HP-Grass for the KO.

-Ludicolo w/Leftovers
Nature: Calm
Ability: Rain Dish
EVs: 252 HP, 212 Sp.Defense, 40 Speed, 4 Sp.Attack
Moves: Scald, Giga Drain, Ice Beam, Rain Dance

252+ SpA Lanturn Volt Switch vs. 252 HP / 212+ SpD Ludicolo: 67-79 (18.4 - 21.7%) -- possible 6HKO after Leftovers recovery

4 SpA Ludicolo Giga Drain vs. 252 HP / 4 SpD Assault Vest Lanturn: 126-150 (27.7 - 33%) -- guaranteed 4HKO

Between Leftovers, Giga Drain, and Rain Dish (which Ludicolo can easily set up in this case), Ludicolo can easily take down Lanturn.

Staraptor @ Choice Band or Life Orb
Nature: Adamant
Ability: Intimidate
EVS: 252 Atk, 252 Spd, 4 HP
Moves: Brave Bird, Close Combat, U-Turn, (Idk the last move)

Staraptor would OHKO (i think) Ludicolo w/ Choice Band/Life Orb Brave Bird.
(Excuse me If I am incorrect I only really got into battling a few months ago...)

lajules said:

Staraptor @ Choice Band or Life Orb
Nature: Adamant
Ability: Intimidate
EVS: 252 Atk, 252 Spd, 4 HP
Moves: Brave Bird, Close Combat, U-Turn, (Idk the last move)

Staraptor would OHKO (i think) Ludicolo w/ Choice Band/Life Orb Brave Bird.
(Excuse me If I am incorrect I only really got into battling a few months ago...)

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Staraptor can't really switch in to Ludicolo's Ice Beams or rain-boosted Scalds, so it's not a counter.

Aegislash:

-Shadow Ball
-Shadow Sneak
-Sacred Sword
-King's Shield
Nature: Quiet
EVs: 240 HP/252 SAtk/4 SDef/12 Spe
Item: Leftovers

Aegislash resists or is immune to the entirety of Staraptor's set. It hits it hard with Sacred Sword in return.

Scizor @ Scizornite
Trait: Technician
EVs: 252 HP / 136 Atk / 120 SpD
Adamant Nature

- Swords Dance
- Pursuit
- Bullet Punch
- Superpower / Bug Bite

252+ SpA Aegislash-Blade Shadow Ball vs. 252 HP / 120 SpD Mega Scizor: 142-168 (41.2 - 48.8%) -- guaranteed 3HKO
+2 136+ Atk Technician Mega Scizor Pursuit vs. 240 HP / 0 Def Aegislash-Blade: 514-606 (160.1 - 188.7%) -- guaranteed OHKO

Albeit a shaky counter, Mega Scizor can still set up a Swords Dance as Aegislash uses King's Shield, and then OHKO it with a +2 Pursuit, boosted by Technician. Shadow Sneak and Sacred Sword can't 4HKO.

Talonflame @ Life Orb
Ability: Gale Wings
EVs: 252 Spd / 252 Atk / 4 HP
Adamant Nature
- Brave Bird
- Flare Blitz
- Roost
- Swords Dance

Resists all of Scizor's moves and strikes back super-effectively. Not much more explanation is needed.

Regirock @ Leftovers
Trait: Clear Body
EVs: 252 HP / 252 Atk / 4 SDef
Adamant Nature

- Rock Slide
- Earthquake
- Toxic
- Drain Punch

The reason I prefer Rock Slide over Stone Edge on Regirock is that, unlike Rhyperior, it can't really hit like a truck even with a Choice Band equipped and a defensive Pokemon needs accurate attacks rather than powerful ones. Talonflame can't do jack **** to this Regirock. +2 Brave Bird will never 3HKO thanks to Leftovers, while Rock Slide is an easy OHKO back. Toxic is used just in case Talonflame is paired with bulky waters.

Shaymin @ Life Orb
Trait: Natural Cure
EVs: 232 HP / 252 SAtk / 24 Spd
Modest Nature
- Rest
- Seed Flare
- Hidden Power [Ice]
- Earth Power

Shaymin has enough bulk to withstand any attacks that Regirock manages to strike. With either Seed Flare or Earth Power, it could easily take down Regirock. If its health's ever low, it could instantly heal itself with Rest. When it falls asleep, it should be able to cure its status by switching out thanks to Natural Cure.

Regice @Leftovers
Nature: Modest
Ability: Clear Body
EV: 252 SpAtk, 252 hp

Ice Beam, Thunderbolt, Rest, Sleep Talk

252+ SpA Life Orb Shaymin Seed Flare vs. 252 HP / 4 SpD Regice: 126-149 (34.6 - 40.9%) -- 66.3% chance to 3HKO after Leftovers recovery

252+ SpA Regice Ice Beam vs. 232 HP / 0 SpD Shaymin: 270-320 (67.6 - 80.2%) -- guaranteed 2HKO

Can 2HKO Shaymin and rest off the damage.