Rillaboom.
VGC 2026 Reg M-C Bo3 usage profile · rank #1
september 2026 · 223.5K battles
september 2026 · 223.5K battles
grassPokédex entry ↗
Usage · September 2026
54.1%
Rillaboom is ranked #1 in VGC 2026 Reg M-C Bo3, carried by 262,229 teams
TierS · top 5 of the format
Ladder rank#1 of 191
Raw count262,229
Viability ceiling87
Month on month+54.10pp
13 month peak54.1%
FormatVGC 2026 Reg M-C Bo3
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sets and counters from 223.5K battles
Base statsspecies values, before EVs and natureBST 530
HP
100
Atk
125
Def
90
SpA
60
SpD
70
Spe
85
Usage over time54.1%▲ 54.10pppeak 54.1% · Sep '26
hover a month for the exact figure · 13 months of ladder history
Most used set
3.6% of Rillaboom teamsHP
32
Atk
0
Def
4
SpA
0
SpD
30
Spe
0
NatureSassy
AbilityGrassy Surge · 99.9%
ItemMiracle Seed · 68.5%
EV spread32 HP / 4 Def / 30 SpD
Moves
99.9%
99.5%
86.1%
57.6%
Moves
6 tracked99.9%
99.5%
86.1%
57.6%
36.3%
16.2%
Items
68.5%
8.3%
8.3%
6.3%
5.2%
Abilities
99.9%
0.1%
EV spreads
top 6Sassy32 HP / 4 Def / 30 SpD3.6%
Adamant17 HP / 31 Atk / 10 SpD / 8 Spe2.6%
Adamant32 HP / 25 Atk / 9 Spe1.9%
Adamant26 HP / 15 Atk / 6 SpD / 19 Spe1.6%
Adamant32 HP / 32 Atk / 2 Spe1.5%
Adamant32 HP / 15 Atk / 19 SpD1.3%
Top teammates
share of teams
Best Rillaboom build for VGC 2026 Reg M-C Bo3
The set above is the one VGC 2026 Reg M-C Bo3 players run most often, taken from 223,477 battles in September 2026. Rillaboom sits at rank #1 with 54.1% usage, which puts it in S tier, up 54.10 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.