Rillaboom (Japanese: ゴリランダー Gorirander) is a Grass-type Pokémon introduced in Generation VIII.
It evolves from Thwackey. It is the final form of Grookey.
Rillaboom has a Gigantamax form, Gigantamax Rillaboom.
The following tags implicate this tag: gigantamax_rillaboom (learn more).