Dragapult
Dragapult @ Choice Specs
Ability: Infiltrator
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Shadow Ball
- Draco Meteor
- U-turn
- Flamethrower
CHECK
As an offensively minded Pokémon it's hard to classify Dragapult as a counter, but it is at the very least the closest thing to it. SubSalac Belly Drum Kommo-O isn't hard to idenfity due to being usually reserved to Hyper Offense and being partnered with screeners such as Tapu Koko. Dragapult already has good matchup against HO and Kommo-O is usually there to abuse Dragapults locked into Shadow Ball. However, Thunder Punch variants of BD Kommo-O will not break through Dragapult without prior chip damage, especially without electric terrain. A Dragapult that correctly predicts the set and immediately switches into Kommo-O as it uses Substitute basically kills any hope of setup because of Infiltrator, which also let's it ignore any Light Screen or Aurora Veil and swiftly KO with draco meteor.
That being said, kommo-o has plenty of other setup options, including ones packing a dragon stab (clanging scales or scale shot) that would definitely disqualify dragapult from being a counter, so you should be vary. however, in a vaccuum and considering only subsalac bd kommo-o without earthquake, dragapult is still a big threat despite kommo-o being there to abuse it in the first place
+6 252 Atk Kommo-o Thunder Punch vs. 0 HP / 4 Def Dragapult in Electric Terrain: 239-281 (75.3 - 88.6%) -- 12.5% chance to OHKO after Stealth Rock
+6 252 Atk Kommo-o Thunder Punch vs. 0 HP / 4 Def Dragapult: 183-215 (57.7 - 67.8%) -- guaranteed 2HKO after Stealth Rock
252 SpA Choice Specs Dragapult Draco Meteor vs. 0 HP / 4 SpD Kommo-o: 510-600 (175.2 - 206.1%) -- guaranteed OHKO