Default-form artwork 
Generation 8 · Pokédex profile
Big Fish Pokémon
Pokédex entry
Clads itself in the souls of comrades that perished before fulfilling their goals of journeying upstream. No other species in all Hisui's rivers is Basculegion's equal.
Battle data
Pokédex entry
Clads itself in the souls of comrades that perished before fulfilling their goals of journeying upstream. No other species in all Hisui's rivers is Basculegion's equal.
Battle data
Pokédex entry
The souls of its comrades cloak its body and propel it effortlessly through even raging rapids.
Battle data
No conventional evolution relationship is recorded for this species.
Conditional evolutions can require additional game-specific prerequisites beyond the displayed method.
No direct acquisition source is indexed. Evolution or gifts may still provide a path.
Rare grass and Surfing encounters inherit the first native slot's level range. Supplemental fishing follows each rod's native slots. These ranges exclude Lure effects and randomizer replacements; eligibility restrictions still apply.
Data source: configured Grand Anthology Gen 1–9 species, forms and abilities. The website uses frame-cropped copies of the game's existing Pokémon sprites, which remain franchise/artist-owned assets. Some alternate forms use labeled default-form artwork when their individual sprite is unavailable. See acknowledgments for credits.