The user can trap others in nightmares. They may be nightmares the victim is already having or the user may create a nightmare to trap them in. The nightmares in question can stem from the user or from the victims' own worst nightmares
- Users of Dream Manipulation/Nightmare Manipulation and Telepathy can free the victim.
- Users of Mind Walking may be able to free the victim.
- May not last forever.
- Freddy Krueger (A Nightmare on Elm Street)
- Road Kamelot (D.Gray-Man)
- The Sandman (Martin Mystery)
- Dream of the Endless (DC Comics)
- Three Dream Stooges (Final Fantasy VI)
- Maury Parkman (Heroes)
- Matt Parkman (Heroes)
- Itachi Uchiha (Naruto)
- Darkrai (Pokémon)
- Pokemon using "Nightmare" (Pokemon)
- Antasma (Mario & Luigi: Dream Team)
- Bill Cipher (Gravity Falls)
- Gowther (Nanatsu no Taizai)