Beast Boost (Ability)

Beast Boost (Japanese: ビーストブースト Beast Boost) is an Ability introduced in Generation VII. It is the signature Ability of the Ultra Beasts.

Beast Boost ビーストブースト
Beast Boost
Flavor text
Generation VII
The Pokémon boosts its most proficient stat each time it knocks out a Pokémon.
Generation VIII
The Pokémon boosts its most proficient stat each time it knocks out a Pokémon.

Effect

In battle

When a Pokémon with Beast Boost directly causes another Pokémon (including allies) to faint by using a damaging move, its highest stat (other than HP) is increased by one stage for each Pokémon knocked out by that move execution. If this stat is already at +6 stages, Beast Boost will not activate (not even in the case of a tie of two or more stats).

For determining the highest stat, Beast Boost does not take into account stat stages, held items, or reductions due to status conditions; however, it does consider the effects of Power Split, Guard Split, Power Trick, Wonder Room, and Speed Swap. In the case of a tie between multiple stats, it increases one stat, prioritized in this order: Attack, Defense, Special Attack, Special Defense, and Speed.

If the Pokémon fainting ends the battle, Beast Boost will not activate. Beast Boost activates after the Pokémon gains Attack from Fell Stinger. If a Pokémon with Beast Boost defeats a Pokémon with Mummy using a contact move, the Pokémon's Ability will become Mummy before Beast Boost has the opportunity to activate.

Outside of battle

Beast Boost has no effect outside of battle.

Pokémon with Beast Boost
# Pokémon Types First Ability Second Ability Hidden Ability
Nihilego Rock Poison Beast Boost None None
Buzzwole Bug Fighting Beast Boost None None
Pheromosa Bug Fighting Beast Boost None None
Xurkitree Electric Electric Beast Boost None None
Celesteela Steel Flying Beast Boost None None
Kartana Grass Steel Beast Boost None None
Guzzlord Dark Dragon Beast Boost None None
Poipole Poison Poison Beast Boost None None
Naganadel Poison Dragon Beast Boost None None
Stakataka Rock Steel Beast Boost None None
Blacephalon Fire Ghost Beast Boost None None
Please note that this is only 100% accurate to Generation VIII games.
  • For Generation III games, ignore Abilities introduced in Generation IV or later and Hidden Abilities.
  • For Generation IV games, ignore Hidden Abilities.
  • For Generation V games, ignore Abilities introduced in Generation VI or later.
  • For Generation VI games, ignore Abilities introduced in Generation VII or later.
  • For Generation VII games, ignore Abilities introduced in Generation VIII or later.

In the manga

Pokémon Adventures

Trivia
  • Beast Boost is the only signature Ability to not be exclusive to an evolutionary line or a group of Legendary Pokémon.

In other languages
Language Title
Chinese Cantonese 異獸提升 Yihsau Tàihsīng
Mandarin 異獸提升 / 异兽提升 Yìshòu Tíshēng
French Boost Chimère
German Bestien-Boost
Italian Ultraboost
Korean 비스트부스트 Beast Boost
Brazilian Portuguese Ultraimpulso
Russian Ультраимпульс Ul'traimpul's
Spanish Ultraimpulso



Variations of the Ability Moxie
Moxie • Beast Boost • Chilling Neigh • Grim Neigh • As One


This article is part of Project Moves and Abilities, a Bulbapedia project that aims to write comprehensive articles on two related aspects of the Pokémon games.
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