Counter that Pokémon! SM v.2

Weezing @ Black Sludge
Ability: Levitate
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
- Sludge Wave
- Fire Blast
- Thunderbolt
- Will-O-Wisp

weird set go

Magmortar @ Assault Vest
Ability: Vital Spirit
EVs: 64 HP / 252 SpA / 192 Spe
Modest Nature
- Fire Blast
- Thunderbolt
- Hidden Power Grass
- Flame Charge

Delphox @ Firium Z
Ability: Blaze
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Calm Mind
- Fire Blast
- Psyshock
- Grass Knot

Houndoom @ Life Orb
Ability: Flash Fire
EVs: 4 Def / 252 SpA / 252 Spe
Timid Nature
- Nasty Plot
- Fire Blast
- Dark Pulse
- Hidden Power Water

Poliwrath @ Assault Vest
Ability: Water Absorb
252 HP / 4 Atk / 252 SpD
Careful Nature
- Circle Throw
- Waterfall
- Brick Break
- Ice Punch

Garchomp @ Choice Scarf
Ability: Rough Skin
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature
- Earthquake
- Outrage
- Stone Edge
- Fire Fang

Walrein @ Leftovers
Ability: Thick Fat
EVs: 248 HP / 252 Def / 8 SpD
Bold Nature
- Toxic
- Surf
- Ice Beam
- Protect

Tentacruel @ Black Sludge
Ability: Rain Dish
252 HP / 252 SpA / 4 Spe
Modest Nature
- Rain Dance
- Scald
- Acid Spray
- Sludge Wave

Jellicent @ Choice Specs
Ability: Water Absorb
EVs: 252 HP / 252 SpA / 4 Spe
Modest Nature
- Water Spout
- Shadow Ball
- Ice Beam
- Psychic

lol

Blissey @ Leftovers
Ability: Serene Grace
EVs: 252 Def / 252 SpD / 4 HP
Bold Nature
- Thunderbolt
- Counter
- Ice Beam
-Softboiled

Sableye @ Leftovers
Ability: Prankster
252 HP / 4 Def / 252 SpD
Careful Nature
- Knock Off
- Taunt
- Toxic
- Recover

Sylveon @ Choice Specs
Ability: Pixilate
EVs: 4 Def / 252 SpA / 252 Spe
Modest Nature
- Hyper Voice
- Psyshock
- Hidden Power Fire
- Shadow Ball

Registeel @ Leftovers
Ability: Clear Body
EVs: 252 HP / 4 Def / 252 SpD
Careful Nature
- Curse
- Iron Head
- Rest
- Sleep Talk

Mew @ Rocky Helmet
Ability: Synchronize
EVs: 252 HP / 252 Def / 4 SpD
Impish Nature
- Taunt
- Will-O-Wisp
- U-Turn
- Soft-boiled

Salazzle @ Life Orb
Ability: Oblivious
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
- Nasty Plot
- Fire Blast
- Sludge Wave
- Hidden Power Ice

Mamoswine @ Choice Scarf
Ability: Thick Fat
EVs: 252 Atk / 4 Def / 252 Spe
Jolly Nature
- Icicle Crash
- Earthquake
- Superpower
- Ice Shard

survives any attack from Zygarde and then outspeeds and OHKOs with Icicle Crash

Metagross @ Psychium Z
Ability: Clear Body
EVs: 252 HP / 252 Atk / 4 Def
Adamant Nature
- Zen Headbutt
- Meteor Mash
- Bullet Punch
- Earthquake

252 Atk Sawk Close Combat vs. 252 HP / 4 Def Metagross: 153-180 (42 - 49.4%) -- guaranteed 3HKO

Can switch in, survive an attack, get off a Zen Headbutt, and then KO with Bullet Punch.

pow

Houndoom @ Air Balloon
Ability: Flash Fire
EVs: 4 Def / 252 SpA / 252 Spe
Timid Nature
- Nasty Plot
- Fire Blast
- Dark Pulse
- Hidden Power Grass

Incineroar @ Assault Vest
Ability: Blaze
EVs: 252 Atk / 4 Def / 252 Spe
Adamant Nature
- Earthquake
- Darkest Lariat
- Flare Blitz
- Cross Chop

Doublade @ Eviolite
Ability: No Guard
EVs: 252 HP / 160 Atk / 96 SpD
Adamant Nature
- Swords Dance
- Iron Head
- Shadow Claw
- Shadow Sneak