Kommo-o

Kommo-o, The Scaly Pokémon. It clatters its tail scales to unnerve opponents. This Pokémon will battle only those who stand steadfast in the face of this display. Certain ruins have paintings of ancient warriors wearing armor made of Kommo-o scales.

Overview

Kommo-o has significantly changed on this generation as one of the best defensive Pokemon on the current metagame. With access to new toys such as Iron Defense and Body Press, Kommo-o becomes a reliable physical wall and a hazard setter thanks to its great defensive typing while remaining capable of dealing with threats such as Bisharp, Excadrill and Urshifu while being able to even overwhelm Pokemon like Corviknight. While its more offensive sets have died out due to the removal of Z-moves and losing its biggest upgrade from USUM in Clangorous Soulblaze, Kommo-o can still be a decent sweeper despite being outclassed significantly by other Pokemon such as Dragapult on this role. While Kommo-o is great on its own, it has a severe flaw on its x4 weakness to Fairy and it doesn't helps his cause that while its Speed tier is decent, it's not good enough and it leaves it outsped by Mimikyu. Despite these flaws, Kommo-o is a good Pokemon to consider on any team.
Positives
A greatly balanced stat distribution highlighting its base 125 Defense and base 105 Special Defense makes Kommo-o incredibly bulky despite its average base 75 HP.
It's base 110 Attack and 100 Special Attack with its decent base 85 Speed means that Kommo-o can still hit decently hard while not being terribly slow unlike other walls like Toxapex.
Access to Body Press and Stealth Rock makes Kommo-o a very reliable hazard setter while still being capable of checking physical attackers like Urshifu-SS, Rillaboom and others.
It's offensive moveset gives him all the necessary tools to avoid getting walled by specific threats. It gets access to Earthquake, Flamethrower, Aura Sphere, Close Combat, Draco Meteor among other defensive moves like Toxic.

Negatives
It's x4 weakness is its biggest flaw as it allows Pokemon like Azumarill, Magearna and Mimikyu to OHKO it without most issues.
While base 85 Speed is impressive for a Pokemon that will mostly be used on a support role, for a sweeper, it's pretty average which underwhelms Clangorous Soul sets and other offensive options as it still gets it revenge killed by faster Scarf users like Hydreigon.

Movesets

CLANGING ROCKS

- Stealth Rock / Iron Defense
- Body Press
- Earthquake / Flamethrower
- Toxic / Taunt
Item Attached: Leftovers / Rocky Helmet
Ability: Bulletproof
EVs and Nature:
252 HP / 188 Def / 68 Spe
Impish / Bold Nature

Thanks to its great defensive typing and sheer bulk, Kommo-o can easily find ways to reliably set up Stealth Rock in the game and support its team. Thanks to its bulk investment, it can easily switch into threats such as Cinderace, Rillaboom and Excadrill forcing them out. Body Press is the most powerful STAB this set can use and thanks to its fantastic Defense stat, it will deal respectable damage. For its coverage move, Kommo-o can use Earthquake as it hits Magearna super-effectively which prevents it from getting a safe switch-in. However, if Ferrothorn and Scizor are a serious concern, Flamethrower can be used with a Bold nature to roast both of these threats. As for the last move, Toxic can be used to cripple bulky Pokemon like Hippowdown or Jellicent that Kommo-o simply cannot break. Taunt on the other hand, provides excellent utility on preventing status moves being used. If there is a Stealth Rock user on your team, Iron Defense should be used as it gives Kommo-o additional bulk to defeat sweepers like Excadrill 1-v-1 and wall-breaking power allowing it to overwhelm Pokemon like Corviknight.

DYNAMAX
This is a set that should be limited more towards supporting rather than taking advantage of the extra power Dynamax brings. There's little to no reason on Dynamaxing this Kommo-o set unless it allows it to tank a hit you want Kommo-o to survive.

EV and Items
68 Spe EVs allow Kommo-o to outspeed neutral 252 Spe Tyranitar while getting the jump on anything that speed creeps that benchmark, usually done by Pokemon like the Rotom appliances. Max HP and 188 Def EVs provides Kommo-o with the required bulk to take on Pokemon like Scizor, Urshifu, Cinderace and Rillaboom.

Partners

Volcarona: Thanks to its Rock resistance and ability to set up Stealth Rock, Volcarona benefits from having Kommo-o as a partner and in return, its ability to set up on Magearna and beat it with its Fire STAB makes it beneficial for Kommo-o
Togekiss: While Togekiss doesn't really offers a lot defensively other than its immunity to Dragon, it can Dynamax and sweep its opponent while taking advantage of Stealth Rock. It's worth mentioning that Kommo-o has a good match-up against Steel types like Excadrill that try to end Togekiss' sweep.
Rotom-Heat: It provides momentum with Volt Switch which gives Kommo-o more opportunities to set up hazards, but thanks to its access to Nasty Plot and STAB Overheat, it's one of the few Pokemon that can beat both Magearna and Togekiss consistently. On the other hand, Kommo-o offers a solid Rock and Water resist while being able to deal with Mold Breaker Excadrill.
Clefable: Kommo-o heavily appreciates its Wish support and any momentum gained from Teleport. It also has a Dragon immunity and overall a fantastic check for opposing Dragons that Kommo-o cannot outspeed like Dragapult and Hydreigon.
Zeraora: It's fantastic Speed tier makes it a solid check against boosted Togekiss and Hawlucha while providing momentum with Volt Switch.
Bisharp: Not only it acts as a Defog deterrent against Pokemon that are trying to remove Kommo-o's hazards but it benefits immensely from Stealth Rock and it can easily revenge kill Pokemon like Alakazam.

CLANGOROUS SOUL-BLAZE

- Clangorous Soul
- Aura Sphere
- Flash Cannon
- Clanging Scales
Item Attached: Throat Spray
Ability: Overcoat / Soundproof
EVs and Nature:
4 HP / 252 SpA / 252 Spe
Timid Nature

TWhile it lost it's Z-move from last gen it basically gained a move version of it in Clangorous Soul which grants an omni-boost in exchange of 1/3 of its HP. Because Clangorous Soul is a sound based move, it triggers its Throat Spray and ends up with an additional Special Attack making Kommo-o an incredible threat capable of sweeping unprepared teams. Aura Sphere is the most reliable STAB allowing Kommo-o to spam a never-missing move. Flash Cannon is the best coverage move Kommo-o can use against Clefable and Togekiss. Finally, Clanging Scales is another great STAB capable of denting anything that does not resist it at +2. If Magearna is a huge concern, Flamethrower can be used in order to deal higher damage to it although it's worth mentioning that Assault Vest sets will easily survive and it will almost certainly force Kommo-o to Dynamax in order to avoid falling down to it.

DYNAMAX
This set was made to be abused on Dynamax. While Kommo-o only gains something noticeable from Max Steelspike which further increases its physical bulk, Max Wyrmind pretty much achieves the same but instead it reduces its opponent's attack. It's unfortunate that Kommo-o doesn't really gains much from the additional effects from its common max moves as Max Knuckle increases an un-invested stat while Max Flare provides Sun.

EV and Items
Max Special Attack and Speed is what Kommo-o needs in order to increase its chances of sweeping while outspeeding as many threats as possible after a Clangorous Soul boost. With a Timid nature, Kommo-o is guaranteed to outspeed +252 Spe Dragapult and +252 Spe Zeraora at +1 which makes it overall the better nature. Soundproof is the preferred ability as this allows Kommo-o to ignore Hyper Voice from the likes of Sylveon however if it is being used on a Hail team with Veil support, Overcoat is the preferred ability to nullify the chip damage from weather.

Partners

Alolan Ninetales: With Overcoat, not only Kommo-o ignores the chip damage sustained from hail but it becomes almost impossible to take down with Veil's protection once it gainst a Clangorous Soul boost which allows it to extend its sweep.
Ferrothorn: Its ability to set up hazards and its resistance to Psychic, Dragon and Fairy makes it for an ideal defensive partner.
Zeraora: Thanks to Volt Switch it can provide momentum for Kommo-o to find an opportunity to set up a Clangorous Soul while checking both Hawlucha and Togekiss.
Clefable: It can provide momentum with Teleport while providing Wish support which can be crucial to maintain Kommo-o as healthy as possible before attempting to sweep.
Bisharp: An immunity to Psychic and its ability to beat Fairy types like Clefable makes it a great partner for Kommo-o.

Other Options

Kommo-o can also use a Dragon Dance set but due to its lower speed, this makes it completely outclassed against Dragapult who boasts a higher Speed and a much more spammable secondary STAB.
Choice items are also an option but when you take into account that both of Kommo-o STABs have immunities, it makes it very unappealing on the long run.
Kommo-o also gains access to Swords Dance, but once again, the lower Speed makes it a completely inferior user of the move.

Countering Kommo-o

Pretty much any Fairy type will easily break Kommo-o and dispatch it quickly due to its x4 weakness. Mimikyu deserves a special mention since it is immune to both of its main STAB and it even has Disguise to take a predicted Flash Cannon if necessary. Pokemon like Azumarill and Magearna will easily wall it and OHKO with their STAB Fairy moves.

Kommo-o also boasts weaknesses to Dragon, Ice, Psychic and Flying type attacks. While its decent bulk with shrug most non-STAB efforts, STAB users like Alakazam, Mamoswine and Hydreigon are strong enough to OHKO it. It should be worth mentioning that if Kommo gets a Clangorous Soul boost, it becomes very hard to OHKO.

Toxapex will easily shut down Clangorous Soul sets thanks to Haze and pretty much wall it for the rest of the game.

Locations in Games

Red/Blue/Yellow:
Not in game

Gold/Silver/Crystal:
Not in game

Ruby/Sapphire/Emerald:
Not in game

FireRed/LeafGreen:
Not in game

Colosseum/XD:
Not in game

Diamond/Pearl/Platinum:
Not in game

HeartGold/SoulSilver:
Not in game

Black/White:
Not in game

Black 2/White 2:
Not in game

X/Y:
Not in game

Omega Ruby/Alpha Sapphire:
Not in game

Sun/Moon:
Vast Poni Canyon

Ultra Sun/Ultra Moon:
Vast Poni Canyon

Let's Go, Pikachu!/Let's Go, Eevee!:
Not in game

Sword/Shield:
Dusty Bowl (Sword)
Max Raid Battles: Axew's Eye, Rolling Fields, Loop Lagoon, Workout Sea, Honeycalm Sea (Sword)
Trade from Sword (Shield)

Anime Appearences

Kommo-o has made a single appearance in the anime. In it, the Totem Kommo-o fought to stop Gladion and Lillie from reaching the Altar of the Sunne

# -English Episode Name- -Jap. Episode Name- Pics
994 Family Determination! EffortfuLillie! A Determined Runaway Act! Pics
995 Revealing the Stuff of Legend! The Altar of the Sunne! Solgaleo Descends!! Pics
1072 Battle Royal 151 Brawl! Battle Royal 151!! Pics
1073 Battling Besties! Mallow & Lana! A Fully Powered Battle of Friendship!! Pics