- Nightmare Affinity/Augmentation
User becomes stronger, faster, more durable, etc. from nightmares, possibly unlocking abilities related to the affinity and enhancing their existing powers. Some users may be able to draw sustenance from the nightmares or even slow or stop aging.
- Decelerated Aging/Semi-Immortality
- Enhanced Condition or Supernatural Condition
- Self-Power Augmentation
- Fear Manipulation
- Nightmare Embodiment
- Nightmare Manipulation
- Oneiric Empowerment
- Sleep Manipulation
- Users of Oneiric Immunity are immune.
- Dendar, The Night Serpent (Forgotten Realms )
- Nightmare King (Little Nemo: Adventures in Slumberland)
- Nightmare Man (The Sarah Jane Adventures)
- Tantabus (My Little Pony: Friendship Is Magic)
- Darkrai (Pokemon)