Rillaboom.
VGC 2026 Reg M-C usage profile · rank #1
september 2026 · 1.6M battles
september 2026 · 1.6M battles
grassPokédex entry ↗
Usage · September 2026
46.6%
Rillaboom is ranked #1 in VGC 2026 Reg M-C, carried by 1,410,840 teams
TierS · top 5 of the format
Ladder rank#1 of 277
Raw count1,410,840
Viability ceiling84
Month on month+46.60pp
13 month peak46.6%
FormatVGC 2026 Reg M-C
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sets and counters from 1.6M battles
Base statsspecies values, before EVs and natureBST 530
HP
100
Atk
125
Def
90
SpA
60
SpD
70
Spe
85
Usage over time46.6%▲ 46.60pppeak 46.6% · Sep '26
hover a month for the exact figure · 13 months of ladder history
Most used set
4.4% of Rillaboom teamsHP
32
Atk
32
Def
0
SpA
0
SpD
2
Spe
0
NatureAdamant
AbilityGrassy Surge · 99.8%
ItemMiracle Seed · 62.5%
EV spread32 HP / 32 Atk / 2 SpD
Moves
98.7%
98.6%
85.2%
47.3%
Moves
6 tracked98.7%
98.6%
85.2%
47.3%
44.6%
14.7%
Items
62.5%
9.6%
8.4%
5.7%
5.1%
2.5%
2.0%
Abilities
99.8%
0.2%
EV spreads
top 6Adamant32 HP / 32 Atk / 2 SpD4.4%
Adamant32 HP / 32 Atk / 2 Spe3.1%
Jolly2 HP / 32 Atk / 32 Spe2.9%
Adamant18 HP / 25 Atk / 5 Def / 10 SpD / 8 Spe2.5%
Adamant2 HP / 32 Atk / 32 Spe1.7%
Sassy32 HP / 4 Def / 30 SpD1.4%
Top teammates
share of teams
Best Rillaboom build for VGC 2026 Reg M-C
The set above is the one VGC 2026 Reg M-C players run most often, taken from 1,631,943 battles in September 2026. Rillaboom sits at rank #1 with 46.6% usage, which puts it in S tier, up 46.60 points on the month before.
These are usage numbers, not a recommendation from a council. A move at 90% is close to mandatory; anything under 30% is a tech pick that answers a specific matchup. Read the spreads the same way: the top spread is the safe default, and the alternatives usually trade bulk for speed or the other way round.
The checks and counters table is generated from real games rather than a type chart, so it accounts for items, Tera choices, and how often the matchup ends in a switch instead of a knockout.