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


In battle

At the end of each turn, each Pokémon that is asleep will lose 1/8 of its maximum HP while the Pokémon with this ability is on the field.

It only inflicts damage on the turn Yawn puts the target to sleep. Abilities like Shed Skin may cancel out this ability if they activate and cure the status condition.

Pokémon with Bad Dreams

As a natural ability

Pokémon Type
491.png Darkrai dark
If any of the Pokémon were introduced before the generation that Bad Dreams was introduced in, then they will not have it as a natural ability until then.



  • Tobias' Darkrai is the only known one of its kind to not have used this ability.