Beast Boost (Ability)

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. Generation IX Boosts the Pokémon's most proficient stat every time it knocks out a target.

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.

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 IX 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. For Generation VIII games, ignore Abilities introduced in Generation IX or later.

In the manga

Pokémon Adventures

• Sun's Stakataka, Drachma, was revealed to have Beast Boost as its Ability.

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

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.