Kommo-o is an unorthodox wallbreaker and setup sweeper that can blow past certain team structures with ease while also providing its team with notable defensive utility thanks to its typing and ability. However, Kommo-o's terrible matchup versus the tier's common Fairy-types such as Clefable and Tapu Lele limits its utility and means it requires significant support to be a consistent choice. Clanging Scales combines with Kommonium Z to give Kommo-o access to Clangorous Soulblaze, a powerful Z-Move that also boosts all of Kommo-o's stats one stage and notably OHKOes Great Tusk and offensive Landorus-T after Stealth Rock. Close Combat is preferred for its power, notably OHKOing Heatran at +1 and improving damage rolls against Melmetal and Mega Diancie. Drain Punch, although much weaker, gives Kommo-o some form of recovery and can let it heal off damage it may have taken while setting up on Pokemon such as Ferrothorn. Flamethrower hits Corviknight, Gholdengo, and Mega Scizor, preventing them from reliably trading with Kommo-o. Kommo-o is a decent Stealth Rock setter, as it dissuades common entry hazard removers such as Great Tusk, Terapagos, and Landorus-T from directly switching into it thanks to its Z-Move. Taunt is another option that allows Kommo-o to shut down Pokemon like Toxapex, Gliscor, and Galarian Slowking that might try to stop it via status or Haze. Clangorous Soul lets Kommo-o set up boosts reliably against teams with a Fairy-type, although it still won't sweep them easily, as Fairy-types like Tapu Lele, Clefable, and Tapu Fini can still take Kommo-o's boosted moves fairly comfortably. Additionally, while setting up both boosts is potentially devastating, it is often difficult to do so and unnecessary in a lot of situations due to Kommo-o's power at +1 often being sufficient. The other two moves are therefore often preferred. Bulletproof is very useful against foes such as Mega Charizard Y and Gholdengo variants lacking Make it Rain, since it lets Kommo-o effectively counter them, turning them into setup fodder.

Kommo-o's threatening nature lets it fit well on offensive teams that want to keep the pressure on while appreciating Kommo-o's ability to check Hisuian Samurott, Mega Charizard Y, and Heatran. Kommo-o struggles greatly against Fairy-types such as Mega Diancie, Tapu Lele, and Clefable, as they easily block its Z-Move while not being appreciably threatened by its coverage moves. Teammates that can take advantage of these Fairy-types are therefore required. Steel-types like Gholdengo, Melmetal, and Corviknight can come in on these Fairy-types and make progress via exerting significant offensive pressure from the former two or pivoting out and gaining momentum with the latter. Gholdengo also assists Stealth Rock variants of Kommo-o by blocking Rapid Spin and Defog attempts from Terapagos, Tornadus-T, and Zapdos. Kommo-o in turn can switch into Fire-types such as Mega Charizard Y and Heatran, which threaten these Steel-types. Frail wallbreakers and cleaners, such as Iron Valiant, Urshifu-R, and Choice Scarf Tapu Lele love Kommo-o providing defensive utility on top of keeping up the offensive pressure for its teammates. Taunt variants work especially well with these teammates, as Kommo-o becomes adept at breaking down defensive cores consisting of Pokemon such as Toxapex, Gliscor, and defensive Landorus-T for these faster teammates. Kommo-o's access to Stealth Rock is useful for these offensive teams, as they sometimes struggle to fit Stealth Rock setters elsewhere, and they don't mind Kommo-o's limited longevity preventing it from setting up Stealth Rock multiple times over the course of a longer game. It notably frees up a moveslot on teammates such as Ferrothorn, Heatran, and Landorus-T. Hyper offense teams can often afford the Clangorous Soul variant of this set, as they generally have a dedicated lead devoted to setting entry hazards up. Teammates such as Iron Valiant, Roaring Moon, and Kingambit often fit on these teams and can pair with Kommo-o to exert immense offensive pressure on the opposing team and beat down their shared checks such as Tapu Lele, Clefable, and Toxapex.

Kommo-o is a unique Stealth Rock setter and special wall. Its Dragon typing combined with Bulletproof allows it to withstand hits from powerful attackers such as Mega Charizard Y, Ogerpon-W, and Volcarona, making it a solid check to all of them, as well as Gholdengo variants lacking Make It Rain. Body Press enables Kommo-o to threaten immediate damage on its targets such as Ogerpon-W and Serperior, as well as mauling Steel-types such as Ferrothorn and Heatran. Toxic lets Kommo-o threaten common Body Press answers, notably Moltres, Tapu Lele, Zapdos, and Landorus-T. Stealth Rock allows Kommo-o to make long-term progress and enables the breakdown of many common offensive pieces, especially the 4x Rock-weak Mega Charizard Y and Buginium Z Volcarona. Protect lets Kommo-o recover HP for free with Leftovers, force foes to take an additional turn of poison damage, and scout threatening moves from Choice-locked Pokemon such as Choice Scarf Tapu Lele and Choice Specs Iron Valiant. Earthquake enables Kommo-o to not get stonewalled by Gholdengo, as well as threatening Galarian Slowking, Clodsire, and Tapu Koko. 32 Defense EVs with an Impish nature let Kommo-o take Mega Lopunny's Close Combat twice from full HP after Stealth Rock damage. 52 Speed EVs allow Kommo-o to outspeed uninvested Landorus-T, and 176 Special Defense EVs allow it to survive a Luster Purge from Mega Latios at full HP.

Kommo-o fits best on bulky offense and balance teams that can give it the specific support it needs to thrive. It can stave off offensive Pokemon such as Mega Charizard Y and Ogerpon-W, but it generally thuds against more defensive builds featuring Toxapex and Gliscor. Conversely, Kommo-o can be overwhelmed defensively by the threats it checks due to its lack of reliable recovery, so it requires a strong backbone and partners that it can rely on to cover its most glaring weaknesses, notably Fairy-types such as Iron Valiant and Hatterene. For this reason, Galarian Slowking and Gholdengo are excellent partners. Offensively, the ability to break past defensive pieces with Future Sight and Nasty Plot,respectively, gives teams a way to threaten the Toxic-immune Toxapex and Pecharunt, and Kommo-o can in turn serve to step in versus the Dark-types that force out both its teammates such as Kingambit and Hisuian Samurott. Galarian Slowking and Gholdengo also patch up the weakness to Psychic- and Fairy-type Pokemon, most notably Tapu Lele and Mega Latios. In a similar vein, Clefable helps against Dragon-types, serving to deny Garchomp and Dragonite the ability to obliterate Kommo-o with their powerful Z-Moves. Clefable can use Thunder Wave to make the Speed tiers of threatening sweepers like Ogerpon-W and Kartana more manageable for Kommo-o, and it can use Knock Off to remove the Heavy-Duty Boots that ignore Kommo-o's Stealth Rock. In turn, Kommo-o can deny the otherwise troublesome Ogerpon-W and Mega Charizard Y the opportunity to break through Clefable's otherwise robust defensive profile.