What Mega Evolution changes
Chesnaught, number 652 in the National Dex and a Kalos Pokémon,
holds Chesnaughtite to become Mega Chesnaught,
taking its total from 530 to 630. The biggest single gain is 50 Defense, followed by 40 Sp. Def. It also loses 20 Speed.
The typing does not change — it is Grass and Fighting before and after — so the Mega is the same defensive problem as the base form, only bigger. The ability stays Bulletproof.
What gets through
As Grass and Fighting, 6 of the eighteen attacking types get through for extra damage, and Flying lands for quadruple. It resists 6. The full board is above; the short version is that the
types listed under ×2 and ×4 are the ones worth planning around.
On the Regulation M-B ladder
Mega Chesnaught is played on 0.24% of teams in the Regulation M-B VGC
ladder, which puts it 133th of the 277 Pokémon with enough games to
measure. The move almost every one of them carries is Spiky Shield at 82.8%.
The Champions module tiers it UU.
Those figures come from Smogon's published usage statistics rather than from anything measured
here, and they describe what the ladder plays, not what is strongest.
What threatens it
Smogon publishes no head-to-head checks-and-counters data for doubles formats, so this list is
computed, not measured: these are the most-played Regulation M-B Pokémon carrying
a damaging move of a type Mega Chesnaught takes extra damage from.
- Incineroar — Flare Blitz (Fire, ×2), on 91.1% of its sets
- Sneasler — Dire Claw (Poison, ×2), on 73.9% of its sets
- Charizard-Mega-Y — Heat Wave (Fire, ×2), on 99.9% of its sets
- Whimsicott — Moonblast (Fairy, ×2), on 96.7% of its sets
- Farigiraf — Psychic (Psychic, ×2), on 72.4% of its sets
- Floette-Mega — Dazzling Gleam (Fairy, ×2), on 97.8% of its sets
Where it sits among the Megas
Of the 93 Mega forms in the dex, Mega Chesnaught is 30th by base
stat total. Its best stat is Defense at 172, which is 5th
among Megas; its worst is Speed at 44, 85th.
No other Mega Evolution has the Grass and Fighting typing, so this matchup board is unique to it.
The unevolved Chesnaught is itself on 0.02% of teams.
Putting it on a team
A Mega slot is a commitment: the stone occupies the held item, so whatever Mega Chesnaught would have
wanted from an item, it does not get. Drop it into the
team builder to see what the rest of the six then have to cover,
or take it to the damage calculator to find out whether those
137 points of
Attack actually change a
knockout.
