ordered them (and added a few more)
Sirfetch’d Final Gambit vs. 252 HP Tera Ghost Incineroar: 328-328 (83.2 - 83.2%) -- guaranteed 2HKO // definitely cheating but its funny
Before you call this dishonourable consider this: nothing is more honourable than giving you life defending the world from evil puss in boots
252+ SpA Tera Fire Charizard-Mega-Y Blast Burn vs. 252 HP / 252+ SpD Assault Vest Tera Fire Incineroar in Sun: 161-190 (40.8 - 48.2%) -- guaranteed 3HKO // kyogre's little bro
252+ Atk Choice Band Tera Grass Ogerpon-Teal-Tera Wood Hammer vs. 252 HP / 252+ Def Tera Poison Incineroar: 157-185 (39.8 - 46.9%) -- guaranteed 3HKO
252+ Atk Tough Claws Tera Steel Metagross-Mega Heavy Slam (120 BP) vs. 252 HP / 252+ Def Tera Steel Incineroar: 156-184 (39.5 - 46.7%) -- guaranteed 3HKO // since megas can tera apparently
-1 252+ Atk Choice Band Sheer Force Tera Fire Darmanitan Flare Blitz vs. 252 HP / 252+ Def Tera Rock Incineroar: 152-179 (38.5 - 45.4%) -- guaranteed 3HKO // regular darm beats gdarm in this because of flare blitz' extra power over icicle crash
252+ SpA Choice Specs Pixilate Tera Fairy Sylveon Hyper Beam vs. 252 HP / 252+ SpD Assault Vest Tera Fire Incineroar: 147-174 (37.3 - 44.1%) -- guaranteed 3HKO // Sylveon does the same thing but with more spatk
-1 252+ Atk Choice Band Iron Fist Tera Steel Melmetal Double Iron Bash (2 hits) vs. 252 HP / 252+ Def Tera Steel Incineroar: 144-170 (36.5 - 43.1%) -- approx. 3HKO // and this is why i hate tr teams in ndubers
252+ SpA Choice Specs Tera Steel Dialga Steel Beam vs. 252 HP / 252+ SpD Assault Vest Tera Steel Incineroar: 144-170 (36.5 - 43.1%) -- guaranteed 3HKO // melmetal and dialga do equal amounts of damage ig
252+ Atk Huge Power Tera Fairy Mawile-Mega Play Rough vs. 252 HP / 252+ Def Tera Fire Incineroar: 143-169 (36.2 - 42.8%) -- guaranteed 3HKO // didnt tera mawile last time
252+ Atk Choice Band Decidueye-Hisui Focus Punch vs. 252 HP / 252+ Def Tera Fairy Incineroar: 140-165 (35.5 - 41.8%) -- guaranteed 3HKO // since focus punch is legal
-1 252+ Atk Choice Band Rivalry buffed Tera Flying Unfezant Brave Bird vs. 252 HP / 252 Def Tera Rock Incineroar: 139-164 (35.2 - 41.6%) -- guaranteed 3HKO // this is also definitely cheating but its fun to see unfezant do this
252+ SpA Choice Specs Refrigerate Tera Ice Aurorus Hyper Beam vs. 252 HP / 252+ SpD Assault Vest Tera Fire Incineroar: 138-163 (35 - 41.3%) -- guaranteed 3HKO // Aurorus my GOAT
-1 252+ Atk Choice Band Reckless Tera Fire Emboar Flare Blitz vs. 252 HP / 252+ Def Tera Fire Incineroar: 128-151 (32.4 - 38.3%) -- 97.8% chance to 3HKO // damage boosting abilities are a drug
252+ SpA Choice Specs Tera Fairy Floette-Eternal Light of Ruin vs. 252 HP / 252+ SpD Assault Vest Tera Steel Incineroar: 126-149 (31.9 - 37.8%) -- 94.1% chance to 3HKO // this might be cheating since eternal floette isn't obtainable
252+ Atk Choice Band Tera Fairy Zacian Play Rough vs. 252 HP / 252+ Def Tera Steel Incineroar: 118-139 (29.9 - 35.2%) -- 21.6% chance to 3HKO // idk why i expected it to do something
252+ Atk Choice Band Tera Flying Dragonite Tera Blast (80 BP) vs. 252 HP / 252+ Def Tera Rock Incineroar: 113-134 (28.6 - 34%) -- 1.3% chance to 3HKO // inner focus can't save dnites awful flying stab :(
252+ SpA Choice Specs Delphox Blast Burn vs. 252 HP / 252+ SpD Assault Vest Tera Rock Incineroar: 94-111 (23.8 - 28.1%) -- 95.3% chance to 4HKO // obviously bad but i had to check given my pfp
A couple notes:
If I have already responded to your post, I recommend you make a new post to make sure I don't accidentally miss any edited-in additions.
I've removed Agent-in-Training because people were not using it, which is why certain ones here are not added.
Charizard-Mega-Y was already present.
Ogerpon, Metagross-Mega, Darmanitan, Melmetal, Dialga, Mawile-Mega and Decidueye-Hisui are added.
-1 252+ Atk Choice Band Iron Fist Tera Steel Melmetal Double Iron Bash (2 hits) vs. 252 HP / 252+ Def Incineroar: 144-170 (36.5 - 43.1%) -- approx. 3HKO
Success! You have earned classification:
Agent. It looks like you and hendrit posted Melmetal at about the same time, so I am crediting you both.
252+ SpA Choice Specs Beads of Ruin Tera Fire Chi-Yu Overheat vs. 252 HP / 252+ SpD Assault Vest Incineroar: 164-194 (41.6 - 49.2%) -- guaranteed 3HKO
252+ SpA Choice Specs Tinted Lens Tera Flying Braviary-Hisui Hurricane vs. 252 HP / 252+ SpD Assault Vest Tera Steel Incineroar: 184-218 (46.7 - 55.3%) -- 71.1% chance to 2HKO
Unfortunately, Chi-Yu and Braviary-Hisui were already present.
Yanmega

252+ SpA Choice Specs Tinted Lens Tera Bug Yanmega Bug Buzz vs. 252 HP / 252+ SpD Assault Vest Tera Fairy Incineroar: 154-182 (39 - 46.1%) -- guaranteed 3HKO
252+ SpA Tinted Lens Yanmega Savage Spin-Out (175 BP) vs. 252 HP / 252+ SpD Assault Vest Tera Fairy Incineroar: 150-176 (38 - 44.6%) -- guaranteed 3HKO
Unfortunately, Yanmega was already present.
My estimate is these are the only remaining options that bypass Intimidate with enough left in the tank to get to the leaderboard:
252+ Atk Choice Band Tera Fighting Decidueye-Hisui Focus Punch vs. 252 HP / 252+ Def Tera Flying Incineroar: 187-221 (47.4 - 56%) -- 82.4% chance to 2HKO (Scrappy)
252+ Atk Choice Band Tera Ice Crabominable Ice Hammer vs. 252 HP / 252+ Def Tera Steel Incineroar: 141-166 (35.7 - 42.1%) -- guaranteed 3HKO
(Hyper Cutter)
252+ Atk Huge Power Tera Fairy Mawile-Mega Play Rough vs. 252 HP / 252+ Def Tera Steel Incineroar: 143-169 (36.2 - 42.8%) -- guaranteed 3HKO
(pre-mega hyper cutter)
Edit: forgot the crit approach:
252+ Atk Choice Band Tera Dark Urshifu Wicked Blow vs. 252 HP / 252+ Def Incineroar on a critical hit: 156-184 (39.5 - 46.7%) -- guaranteed 3HKO
252+ Atk Choice Band Tera Water Urshifu-Rapid-Strike Surging Strikes (3 hits) vs. 252 HP / 252+ Def Tera Dragon Incineroar on a critical hit: 159-189 (40.3 - 47.9%) -- approx. 3HKO
Komala actually has a 1/2 chance of dealing 46% min due to Z-Sleep talk both giving +2 crit and making the called move a Z-move (calling Wood Hammer).
Decidueye-Hisui, Crabominable, and Mawile-Mega are added. It looks like you and hendrit posted Decidueye-Hisui and Mawile-Mega around the same time, so you both will get credit.
With Decidueye-Hisui, you have earned classification:
Agent Captain.
Both Urshifu are also added. This is a refinement of a previous submission by hendrit, so both will get credit.