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Pokémon Champions Regulation M‑B

Ended Sep 9Jun 17 – Sep 9, 2026

Ranked Battles ran Jun 17 – Sep 9, 2026 (84 days, Seasons M-3, M-4 and M-5). It added 22 Pokémon, 16 Megas, 31 items, 6 moves and 9 abilities.

First announced to end Sep 2 (pokemon.com still says so); the Aug 5 update extended it to Sep 9.

The announcement Its list of eligible Pokémon

Rules

Timers

  • Total time20 minutes
  • Each player7 minutes
  • Each turn45 seconds
  • Team preview90 seconds

New in Reg M‑B

Megas 16

Mega Raichu X, holding Raichunite XMega Raichu Y, holding Raichunite YMega Sceptile, holding SceptiliteMega Blaziken, holding BlazikeniteMega Swampert, holding SwampertiteMega Mawile, holding MawiliteMega Metagross, holding MetagrossiteMega Staraptor, holding StaraptiteMega Scolipede, holding ScolipiteMega Scrafty, holding ScraftiniteMega Eelektross, holding EelektrossiteMega Pyroar, holding PyroariteMega Malamar, holding MalamariteMega Barbaracle, holding BarbaraciteMega Dragalge, holding DragalgiteMega Falinks, holding Falinksite

Pokémon 22

VileplumeQwilfishSceptileBlazikenSwampertMawileMetagrossStaraptorMusharnaScolipedeScraftyEelektrossPyroarMalamarBarbaracleDragalgeGrimmsnarlFalinksOverqwilHoundstoneAnnihilapeGholdengo

Items 31

BarbaraciteBig RootBlazikeniteDamp RockDragalgiteEelektrossiteExpert BeltFalinksiteHeat RockIcy RockIron BallLife OrbLight ClayMalamariteMawiliteMetagrossiteMetronomeMuscle BandPyroariteRaichunite XRaichunite YSceptiliteScolipiteScraftiniteShed ShellSmooth RockStaraptiteSwampertiteWide LensWise GlassesZoom Lens

Moves 6

Barb Barrage, Physical, power 60, accuracy 100%Make It Rain, Special, power 120, accuracy 95%No Retreat, StatusRage Fist, Physical, power 50, accuracy 100%Spirit Break, Physical, power 75, accuracy 100%Topsy-Turvy, Status

Abilities 9

Battle ArmorEelevateEffect SporeElectric SurgeFire ManeFluffyForewarnGood as GoldSuction Cups

Taken out

Moves 1

Milk Drink, Status

Changes while it ran

Each is dated by when Pokémon Showdown’s data recorded it, which can be a little after the game changed. All the changes, filtered by regulation →

Who can learn what 7

Everything it allowed

Show every Pokémon and Mega 314

Megas 75

Mega Venusaur, holding VenusauriteMega Charizard X, holding Charizardite XMega Charizard Y, holding Charizardite YMega Blastoise, holding BlastoisiniteMega Beedrill, holding BeedrilliteMega Pidgeot, holding PidgeotiteMega Raichu X, holding Raichunite XMega Raichu Y, holding Raichunite YMega Clefable, holding ClefabliteMega Alakazam, holding AlakaziteMega Victreebel, holding VictreebeliteMega Slowbro, holding SlowbroniteMega Gengar, holding GengariteMega Kangaskhan, holding KangaskhaniteMega Starmie, holding StarminiteMega Pinsir, holding PinsiriteMega Gyarados, holding GyaradositeMega Aerodactyl, holding AerodactyliteMega Dragonite, holding DragoniniteMega Meganium, holding MeganiumiteMega Feraligatr, holding FeraligiteMega Ampharos, holding AmpharositeMega Steelix, holding SteelixiteMega Scizor, holding ScizoriteMega Heracross, holding HeracroniteMega Skarmory, holding SkarmoriteMega Houndoom, holding HoundoominiteMega Tyranitar, holding TyranitariteMega Sceptile, holding SceptiliteMega Blaziken, holding BlazikeniteMega Swampert, holding SwampertiteMega Gardevoir, holding GardevoiriteMega Sableye, holding SableniteMega Mawile, holding MawiliteMega Aggron, holding AggroniteMega Medicham, holding MedichamiteMega Manectric, holding ManectiteMega Sharpedo, holding SharpedoniteMega Camerupt, holding CameruptiteMega Altaria, holding AltarianiteMega Banette, holding BanettiteMega Chimecho, holding ChimechiteMega Absol, holding AbsoliteMega Glalie, holding GlalititeMega Metagross, holding MetagrossiteMega Staraptor, holding StaraptiteMega Lopunny, holding LopunniteMega Garchomp, holding GarchompiteMega Lucario, holding LucarioniteMega Abomasnow, holding AbomasiteMega Gallade, holding GalladiteMega Froslass, holding FroslassiteMega Emboar, holding EmboariteMega Excadrill, holding ExcadriteMega Audino, holding AudiniteMega Scolipede, holding ScolipiteMega Scrafty, holding ScraftiniteMega Eelektross, holding EelektrossiteMega Chandelure, holding ChandeluriteMega Golurk, holding GolurkiteMega Chesnaught, holding ChesnaughtiteMega Delphox, holding DelphoxiteMega Greninja, holding GreninjiteMega Pyroar, holding PyroariteMega Floette, holding FloettiteMega Meowstic, holding MeowsticiteMega Meowstic, holding MeowsticiteMega Malamar, holding MalamariteMega Barbaracle, holding BarbaraciteMega Dragalge, holding DragalgiteMega Hawlucha, holding HawluchaniteMega Crabominable, holding CrabominiteMega Drampa, holding DrampaniteMega Falinks, holding FalinksiteMega Scovillain, holding ScovillainiteMega Glimmora, holding Glimmoranite

Pokémon 208 species

VenusaurCharizardBlastoiseBeedrillPidgeotArbokPikachuRaichuAlolan RaichuClefableNinetalesAlolan NinetalesVileplumeArcanineHisuian ArcanineAlakazamMachampVictreebelSlowbroGalarian SlowbroGengarKangaskhanStarmiePinsirTaurosPaldean Tauros (Combat Breed)Paldean Tauros (Blaze Breed)Paldean Tauros (Aqua Breed)GyaradosDittoVaporeonJolteonFlareonAerodactylSnorlaxDragoniteMeganiumTyphlosionHisuian TyphlosionFeraligatrAriadosAmpharosAzumarillPolitoedEspeonUmbreonSlowkingGalarian SlowkingForretressSteelixQwilfishScizorHeracrossSkarmoryHoundoomTyranitarSceptileBlazikenSwampertPelipperGardevoirSableyeMawileAggronMedichamManectricSharpedoCameruptTorkoalAltariaMiloticCastformSunny CastformRainy CastformSnowy CastformBanetteChimechoAbsolGlalieMetagrossTorterraInfernapeEmpoleonStaraptorLuxrayRoseradeRampardosBastiodonLopunnySpiritombGarchompLucarioHippowdonToxicroakAbomasnowWeavileRhyperiorLeafeonGlaceonGliscorMamoswineGalladeFroslassRotomHeat RotomWash RotomFrost RotomFan RotomMow RotomSerperiorEmboarSamurottHisuian SamurottWatchogLiepardSimisageSimisearSimipourMusharnaExcadrillAudinoConkeldurrScolipedeWhimsicottKrookodileScraftyCofagrigusGarbodorZoroarkHisuian ZoroarkReuniclusVanilluxeEmolgaEelektrossChandelureBearticStunfiskGalarian StunfiskGolurkHydreigonVolcaronaChesnaughtDelphoxGreninjaDiggersbyTalonflameVivillonPyroarEternal FloetteFlorgesPangoroFurfrouMeowsticAegislashBlade AegislashAromatisseSlurpuffMalamarBarbaracleDragalgeClawitzerHelioliskTyrantrumAurorusSylveonHawluchaDedenneGoodraHisuian GoodraKlefkiTrevenantGourgeistSmall GourgeistLarge GourgeistSuper GourgeistAvaluggHisuian AvaluggNoivernDecidueyeHisuian DecidueyeIncineroarPrimarinaToucannonCrabominableLycanrocMidnight LycanrocDusk LycanrocToxapexMudsdaleAraquanidSalazzleTsareenaOranguruPassimianMimikyuDrampaKommo-oCorviknightFlappleAppletunSandacondaPolteageistHattereneGrimmsnarlMr. RimeRunerigusAlcremieFalinksMorpekoDragapultWyrdeerKleavorBasculegionFemale BasculegionSneaslerOverqwilMeowscaradaSkeledirgeQuaquavalMausholdGarganaclArmarougeCeruledgeBelliboltScovillainEspathraTinkatonPalafinOrthwormGlimmoraHoundstoneAnnihilapeFarigirafKingambitGholdengoSinistchaArchaludonHydrapple

Dates and rules: the game’s own announcement. What the regulation allowed and when changes came in: Pokémon Showdown’s Champions data, which matches the announcement’s list of eligible Pokémon.