Bad Dreams causes all sleeping opponents to lose 1⁄8 of their maximum HP at the end of each turn.
| Generation IV | Reduces a sleeping foe’s HP. |
|---|---|
| Generation V | Reduces a sleeping foe’s HP. |
# | Name | 2nd ability | Hidden ability |
|---|---|---|---|
| 491 | Darkrai | — | — |
No Pokemon have Bad Dreams as a hidden ability in Pokemon Black & White.