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Pokémon Champions

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Regulation Sets

The seasonal rulesets that define competitive Champions — what's legal, when each season runs, and what changed.

Choose a regulation

Check eligible Pokémon, Mega Evolutions and rules for the season you play.

M-C
Current seasonSep 9 – Dec 2, 2026 (UTC)
Regulation Set M-C
The current ranked regulation, with an expanded eligible roster and six newly allowed Mega Evolutions.
M-B
ArchivedJun 17 – Sep 9, 2026
Regulation Set M-B
The previous regulation launched with the mobile release and expanded the legal pool.
M-A
ArchivedApr 8 – Jun 16, 2026
Regulation Set M-A
The launch regulation for the Switch release, which established the initial ~200-species battle-eligible roster.

Regulation details are hand-maintained from official in-game announcements — see how we handle Champions data.

Where do the usage rates come from?

Usage rates on each regulation page are imported from Smogon's Pokémon Showdown usage statistics for the Champions formats — ladder data, not the official in-game ranked ladder. Updated: Oct 3, 2026.

Read the data methodology

Related

Formats & RulesHow Champions battles workBattle RosterEvery eligible PokémonTier ListProjected top threatsTeam PlannerDraft stats and coverage