Bad Dreams (Ability)

Bad Dreams	ナイトメア
	Nightmare
Flavor text Generation III Currently unknown Generation IV Reduces a sleeping foe's HP. Generation V Reduces a sleeping foe's HP. Generation VI Reduces the HP of sleeping opposing Pokémon. Generation VII Currently unknown Generation VIII Currently unknown Generation IX Currently unknown

Bad Dreams (Japanese: ナイトメア Nightmare) is an Ability introduced in Generation IV. It is the signature Ability of Darkrai.

Effect

In battle

At the end of each turn, each adjacent sleeping foe loses 1/8 of its maximum HP.

Bad Dreams applies after a Pokémon drowsy due to Yawn falls asleep. Bad Dreams applies after a Pokémon has the opportunity to be woken up by Hydration, Shed Skin, or Healer.

Outside of battle

Bad Dreams has no effect outside of battle.

Pokémon with Bad Dreams

#	Pokémon		Types		First Ability	Second Ability	Hidden Ability
0491		Darkrai	Dark		Dark	Bad Dreams	None	None
Please note that Abilities marked with a superscript are only available in the stated generation or later. For Generation III and IV games, ignore Hidden Abilities.

In the anime

Darkrai (XY098) Darkrai (M10) Darkrai (DP104)
The Pokémon causes the opponent to have nightmares.
Pokémon	Method
User	First Used In		Notes
	If the opponent falls asleep when Darkrai is near, it starts to have nightmares.
Darkrai (M10)	The Rise of Darkrai		Debut
A wild Darkrai	Sleepless in Pre-Battle!		None
A wild Darkrai	Dream a Little Dream from Me!		None

In the manga

In the Pokémon Adventures manga

Being affected
The Pokémon causes the opponent to have a nightmare.
Pokémon	Method
User	First Chapter Used In		Notes
	If a person or a Pokémon is asleep near Darkrai, it suffers from horrible nightmares that can be fatal if the sleeping person or Pokémon doesn't wake up in time. The Ability is active even if Darkrai is inside of a Poké Ball.
Sird's Darkrai	Startling Staraptor		Debut

In the movie adaptations

Darkrai
The Pokémon causes the opponent to have a nightmare.
Pokémon	Method
User	First Chapter Used In		Notes
	If the opponent falls asleep when Darkrai is near, it starts to have nightmares.
Darkrai (M10)	The Rise of Darkrai (manga)		Debut

Trivia

• This Ability originated as a TCG Attack.

In other languages

Language Title Mandarin Chinese 惡夢 Èmèng Dutch Boze Dromen Slechte dromen French Mauvais Rêve German Alptraum Indonesian Mimpi Buruk Italian Sogniamari Korean 나이트메어 Nightmare Portuguese Sonhos Ruins Spanish Mal Sueño

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.