Beast Ball is an item in the “Special balls” category (Poké Balls).
In-game descriptions
| Sun / Moon · Ultra Sun / Ultra Moon · Let’s Go, Pikachu! / Let’s Go, Eevee! | A special Poké Ball designed to catch Ultra Beasts. It has a low success rate for catching others. |
|---|---|
| Sword / Shield | A somewhat different Poké Ball that has a low success rate for catching a Pokémon. |
Where to find it
Not placed on the atlas maps (so far: Red/Blue and Generation 3).
Sources : PokeAPI (items, item_flavor_text, machines) · atlas · pokeemerald species_info.h