Counter that Pokémon

[pknight96]

Heracross @ Heracronite252 Atk 4 Sp. Def 252 HP


-Pin Missile
-Close Combat
-Rock Blast
-Bullet Seed


252 SpA Life Orb Sceptile Leaf Storm vs. 252 HP / 4 SpD Mega Heracross: 113-134 (31 - 36.8%) -- 72.8% chance to 3HKO (Not factoring Sp. Attack Drops)



252 SpA Life Orb Sceptile Hidden Power Rock vs. 252 HP / 4 SpD Mega Heracross: 71-84 (19.5 - 23%) -- possible 5HKO


252 SpA Life Orb Sceptile Focus Blast vs. 252 HP / 4 SpD Mega Heracross: 70-83 (19.2 - 22.8%) -- possible 5HKO



252 SpA Life Orb Sceptile Giga Drain vs. 252 HP / 4 SpD Mega Heracross: 66-78 (18.1 - 21.4%) -- possible 5HKO




252+ Atk Mega Heracross Pin Missile (5 hits) vs. 4 HP / 0 Def Sceptile: 840-1000 (297.8 - 354.6%) -- guaranteed OHKO


'Nuff said.

 

[Nah]

Aegislash w/Leftovers
Nature: Adamant
Ability: Stance Change
EVs: 252 HP, 252 Attack, 4 Sp.Defense
Moves: Swords Dance, Iron Head, Shadow Sneak, King's Shield

252+ Atk Mega Heracross Rock Blast (5 hits) vs. 252 HP / 0 Def Aegislash-Shield: 70-85 (21.6 - 26.2%) -- possible 5HKO after Leftovers recovery
252+ Atk Mega Heracross Bullet Seed (5 hits) vs. 252 HP / 0 Def Aegislash-Shield: 70-85 (21.6 - 26.2%) -- possible 5HKO after Leftovers recovery
252+ Atk Mega Heracross Pin Missile (5 hits) vs. 252 HP / 0 Def Aegislash-Shield: 50-60 (15.4 - 18.5%) -- possible 8HKO after Leftovers recovery

And since those attacks don't do much, it has time for 2 Swords Dances and then can:
+4 252+ Atk Aegislash-Blade Iron Head vs. 252 HP / 0 Def Mega Heracross: 424-499 (116.4 - 137%) -- guaranteed OHKO

 

[Dark Azelf]

Bisharp@Life Orb
252 Atk / 252 Speed / 6 HP
Trait: Defiant
Adamant Nature
- Knock Off
- Iron Head
- Sucker Punch
- Swords Dance

Resists everything and defiant makes Kings Shield useless. It can then Swords Dance or Knock Off all the items!

 

[BLACKOUT]

Conkeldurr@leftovers
252 HP / 252 Atk
Ability: Iron Fist
Adamant Nature
-Mach Punch
-Drain Punch
-Knock Off
-Poison Jab/Ice Punch.

Conkeldurr can tank any hits from bisharp, then Mach Punch can OHKO with Priority. Knock off slams psychic switch ins. poison jab ( i think conk can learn it) slams fairy switches, Ice punch slams flying switches.

 

[Nah]

-Gyarados w/Leftovers
Nature: Adamant
Ability: Intimidate
EVs: 156 HP, 72 Attack, 96 Defense, 180 Sp.Defense, 4 Speed
Moves: Waterfall, Bounce, Dragon Dance, Taunt

lols at Mach and Drain Punch, and Knock Off/Ice Punch/Poison Jab aren't terribly damaging either:

-1 252+ Atk Iron Fist Conkeldurr Ice Punch vs. 156 HP / 96 Def Gyarados: 83-98 (22.4 - 26.4%) -- 21.5% chance to 4HKO
-1 252+ Atk Conkeldurr Knock Off (97.5 BP) vs. 156 HP / 96 Def Gyarados: 89-105 (24 - 28.3%) -- possible 5HKO after Leftovers recovery
-1 252+ Atk Conkeldurr Poison Jab vs. 156 HP / 96 Def Gyarados: 73-87 (19.7 - 23.5%) -- possible 6HKO after Leftovers recovery

Then happily Bounces on Conk's head until it suffers severe brain damage.

 

[Rayquaza2016]

Manectric @ Manectite
Ability: Intimidate
EVs: 128 SpA / 252 Spe / 128 Def
Timid Nature
- Thunderbolt
- Volt Switch
- Overheat
- HP Ice

Mega Manectric's Intimidate will lower the Gyarados's attack so Bounce and Waterfall will do nothing. (if Manectric did not switch in) Use a Thunderbolt and Gyarados is dead.

Mega Manectric attacks Gyarados:
128 SpA Mega Manectric Thunderbolt vs. 156 HP / 180 SpD Gyarados: 468-552 (126.4 - 149.1%) -- guaranteed OHKO

Gyarados attacks with Waterfall to the Manectric that just switched in:
72+ Atk Gyarados Waterfall vs. 0 HP / 128 Def Manectric: 153-181 (54.4 - 64.4%) -- guaranteed 2HKO (It survives!)

Intimidated Gyarados attacks with Waterfall to the Mega Manectric:
-2 72+ Atk Gyarados Waterfall vs. 0 HP / 0 Def Mega Manectric: 75-88 (26.6 - 31.3%) -- guaranteed 4HKO

 

[Megan]

Swampert @ Leftovers
Ability: Torrent
EVs: 252 HP / 252 Atk / 4 SpD
Adamant Nature
- Earthquake
- Waterfall
- Stealth Rock
- Ice Punch

128 SpA Mega Manectric Hidden Power Ice vs. 252 HP / 4 SpD Swampert: 68-80 (16.8 - 19.8%) -- possible 7HKO after Leftovers recovery
128 SpA Mega Manectric Overheat vs. 252 HP / 4 SpD Swampert: 73-86 (18 - 21.2%) -- possible 7HKO after Leftovers recovery

252+ Atk Swampert Earthquake vs. 0 HP / 128 Def Mega Manectric: 330-390 (117.4 - 138.7%) -- guaranteed OHKO

 

[Rayquaza2016]

Venusaur @ Venusaurite
Ability: Thick Fat
EVs: 252 HP, 252 SpA, 4 Def
Bold Nature
-Leech Seed
-Sludge Bomb
-Giga Drain
-Synthesis

Swampert can't touch Mega Venusaur and Mega Venusaur can heal all of its HP back with Giga Drain.

 

[Nah]

-Mega Scizor w/Scizorite
Nature: Adamant
Ability: Technician
EVs; 252 HP, 252 attack, 4 Sp.Defense
Moves: Bullet Punch, Bug Bite, Roost, Swords Dance

 

[Jin Of The Gale]

Zapdos @ Leftovers
Ability: Pressure
EVs: 248 HP / 244 Def / 16 Spd
Bold Nature
- Thunderbolt
- Heat Wave
- Toxic
- Roost

 

[Zeffy]

Gliscor @Toxic Orb
Ability: Poison Heal
EVs: 252 HP / 184 Def / 232 Spe
Impish nature
- Substitute
- Toxic
- Earthquake
- Protect

Gliscor can come in, only really susceptible to Zapdos' Heat wave, which only has a low chance of a 4HKO. From then, once Gliscor has a sub up, Zapdos is perpetually stalled and Gliscor can just wait for Zapdos to faint due to Toxic.

 

[Dark Azelf]

Excadrill@Air Balloon
252 Atk / 252 Speed / 6 HP
Adamant Nature
Trait: Sand Rush (active)
- Swords Dance
- Iron Head
- Earthquake
- Rock Slide

^ Is why SubToxic Gliscor sucks. Something it should be countering (and is one of the best counters in the game to) walls it lol. :P

 

[Avatar358]

Hawlucha @ Air Balloon
Ability: Unburden
EVs: 252 Atk / 252 Spd / 4 Def
Adamant Nature
- Roost
- High Jump Kick
- Brick Break
- Swords Dance

 

[Zeffy]

Gourgeist-Super @ Leftovers
Ability: Frisk
EVs: 252 Def / 4 Atk / 252 HP
Impish Nature
- Leech Seed
- Will-O-Wisp
- Protect
- Shadow Sneak

walled

 

[Nah]

-Pyroar w/Life Orb
Nature: Timid
Ability: Unnerve
EVs: 252 Sp.Attack, 252 Speed, 4 Defense
Moves: Fire Blast, Hyper Voice, Hidden Power Ice, Dark Pulse

Pumpkins burn fairly easily.

 

[Zeffy]

Suicune @Leftovers
252 HP / 252 Def / 4 SpA
Bold nature
- Scald
- Rest
- Sleep Talk
- Calm Mind

cro-cune'd

 

[Boilurn]

Nasty Plot Simisage is a good check, resisting Scald and OHKOing with a Life Orb +2 Leaf Storm after a Calm Mind boost.

Simisage
Item: Life Orb
Nature: Timid
~ Nasty Plot
~ Leaf Storm
~ HP Rock
~ Focus Blast

 

[KorpiklaaniVodka]

You should use something like Grass Knot over Leaf Storm on your Simisage.

Anyway....

Latios @ Life Orb
Trait: Levitate
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature

- Calm Mind
- Dragon Pulse
- Hidden Power Steel
- Psyshock / Roost

Doesn't care about anything Simisage does, can set up a Calm Mind if it decides to set up with Nasty Plot, and 2HKOes with Psyshock. Hidden Power Steel is used on this Latios to catch some Fairy-type Pokemon and 2HKO them, whereas most of them can't OHKO back after a Calm Mind.

 

[PlatinumDude]

You should use something like Grass Knot over Leaf Storm on your Simisage.

Anyway....

Latios @ Life Orb
Trait: Levitate
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature

- Calm Mind
- Dragon Pulse
- Hidden Power Steel
- Psyshock / Roost

Doesn't care about anything Simisage does, can set up a Calm Mind if it decides to set up with Nasty Plot, and 2HKOes with Psyshock. Hidden Power Steel is used on this Latios to catch some Fairy-type Pokemon and 2HKO them, whereas most of them can't OHKO back after a Calm Mind.

FYI, STAB Psyshock does the same amount of damage as a 2x super effective HP Steel (in case you didn't know, Hidden Power got nerfed to a fixed base power of 60 instead of a potential power of 70 depending on IVs).

Anyway:

Klefki

-Spikes
-Play Rough
-Foul Play
-Thunder Wave
Nature: Impish
EVs: 252 HP/252 Def/4 SDef
Item: Leftovers
Ability: Prankster

Klefki takes nothing from Dragon Pulse, while shrugging off Hidden Power or Psyshock. It then cripples Latios with Thunder Wave or 2HKOs it with Play Rough.

 

[Apollo]

Klefki

-Spikes
-Play Rough
-Foul Play
-Thunder Wave
Nature: Impish
EVs: 252 HP/252 Def/4 SDef
Item: Leftovers
Ability: Prankster

Klefki takes nothing from Dragon Pulse, while shrugging off Hidden Power or Psyshock. It then cripples Latios with Thunder Wave or 2HKOs it with Play Rough.

Swampert @ Leftovers
Ability: Torrent
Nature: Modest
252 SpA / 252 HP / 4 SpD
- Earth Power
- Surf
- Rest
- Sleep Talk

Earth Power should be able to finish it off with one hit or two. If the battle somehow lasts longer than expected, then the classic Rest + Sleep Talk combo should work.