Thundurus
Checks:
-Tyranitar (hard), special bulk, SE STAB in Stone Edge, but can be hit by Focus Blast/Superpower
-Excadrill (soft), immune to Thunderbolt, takes little from HP Ice and Flying, Rock Slide availability, hit by Fighting coverage.
-Quagsire (soft), Unaware ignores Nasty Plot, immune to STAB, takes little from most coverage, but weak SDef and few ways of damaging it immediately.
-Latios and Latias (soft), special bulk, resists Thunderbolt, can hit Thundurus hard back, slower and hit hard by Knock Off and crippled by Thunder Wave
-Heatran (hard), special bulk, hits decently hard back, hit by Fighting coverage.
-Conkeldurr (hard), special bulk, enjoys status, can Knock Off or Ice Punch it, weak to HP Flying.
-Mega-Venusaur (hard), bulk, resists Electric and takes pitiful damage from HP Ice, Sludge Bomb hits hard, Leech Seed availability, hit by HP Flying.
-Chansey (soft), bulk on both ends to sponge attacks, cannot do much besides Seismic Toss and Toxic
-Aegislash (soft), good bulk, doesn’t mind Twave, hits back hard with Ghost STAB and priority, weak to Knock Off
Counters:
-Mega-Tyranitar, huge special bulk, physical bulk to take Fighting coverage, SE STAB available.
-Mamoswine, immune to STAB and resists HP Ice, threatens with powerful SE STAB priority.
-Sylveon, special bulk, takes little from coverage, hits back with Hyper Voice.
-Gastrodon, special bulk, immune to Electric, takes little from coverage, hits back with Ice Beam or Scald.
Teammates/playstyle:
Hyper Offense: pressures Defog Mandibuzz for Deoxys forms, checks Azumarril for the likes of Bisharp and ZardX, checks Talonflame and bird spam for frail sweepers. Sets up on physical walls. Paralyzes opposing offensive threats. Access to Defiant.
Zard Y balance: checks Azumarril for Keldeo, flying spam check, emergency out for DDtar with Prankster Twave, Baton Pass check with Taunt.
Balance: Volt Switcher, special attacker, mixed attacker, works well with otherwise physically heavy teams. Makes a good Volturn core with Scizor or Landorus-T.
Scizor (Offensive)
Checks:
- Keldeo (hard), resists both STABS and Knock Off, hits hard on its weaker SDef, decent bulk.
-Talonflame (hard), resists both STABS, SE STAB, great Speed, cant really switch in on Knock Off though.
-Thundurus-I (soft), resists both STABS, hits its weaker SDef and can Taunt before it SDs.
-Landorus-T (soft), Intimidate, bulk, resists Bug,hits decently hard with Earthquake.
-Gourgeist/Trevenant (soft), good bulk, immune to Superpower, Will-o-wisp access, weak to Knock Off.
-Quagsire (hard), ignores boosts, resists STAB, can burn with Scald.
-Gyarados (soft), Intimidate, decent bulk, resists both STABs.
Counters:
-Heatran, resists both STABs x4, x4 SE STAB, good bulk, can potentially outspeed.
-Charizard Y, resists both STABs, takes little from Knock Off, x4 SE STAB.
-Magnezone, resists both STABs, traps it, high SAtk for HP Fire.
-Rotom-W, resists main STAB x4, good bulk, access to Will-o-wisp
-Skarmory, resists both STABs, can set up hazards on it, can phase it, neutral to Superpower.
-Defensive CharizardX, resists both STABs, takes little from Knock Off, neutral to Superpower, access to Will-o-wisp and x4 SE STAB, good bulk.
Teamstyle/teammates:
Volturn: classic core formed with Rotom-W and Landorus-T, checks things like Venusaur for Rotom and Mamoswine and Kyurem-B for Landorus-T.
Offense: good teammate to Talonflame to check Tyranitar, checks Mamoswine, Lati@s and Clefable for Dragonite and Garchomp. Also has access to Defog.
Scizor-Mega (Defensive)
Checks:
-Thundurus (soft), access to Defiant for Defog, can otherwise hit its weaker SDef, resists both STABS.
-Bisharp (soft), Defiant, can Taunt it to block Roost, resists Bullet Punch.
-Ferrothorn (hard), resists Steel STAB and access to Iron Barbs, can stall out Defog, Leech Seed, great bulk, Thunder Wave.
-Gyarados (soft), Intimidate, resists both STABs, can set up on it.
-Sableye (hard), decent bulk, priority Taunt to stop Defog, access to Will-o-wisp.
Counters:
-Heatran- resists both STABs, stalls out Defog with Rocks, x4 SE STAB on it.
-Rotom-W, burns it with Will-o-wisp, resists Steel STAB, good bulk.
-Charizard Y- resists both STABs, x4 SE STAB, enjoys Defog.
-Charizard X, same reasons as Y, but can also set up.
-Skarmory, great bulk, stalls out Defog, resists STABs, access to Taunt.
-Talonflame, enjoys having hazards cleared, x4 SE STAB, resists both STABs.
-Keldeo, resists both STABs and Knock Off, hits decently hard off the special side, and can burn with Scald.
Teamstyle/teammates:
Balance: Great Defogger, good teammate for Dragonite and Talonflame once again to check Latis and Tyranitar, also supports Tyranitar itself by being able to take on Garchomp without Fire Blast and other physical attackers like Conkeldurr. Slow U-turn aids frail Pokemon like Greninja to switch in safely.
Semi-stall: makes a good core with Ferrothorn and Chansey, checking physical fighting types they want to deal with. Chansey takes on Fire type special attackers like Zard Y well for it. Ferrothorn checks Rotom-W for it.