- Description: A female humanoid with a strong demonic appearance (wings, horns, pointed tail, skin patterns/markings, etc.) Occasionally also have abnormal skin color and eyes.
- Notes: Should not be confused with f:oni. Does not qualify for monster girl. Participants with demonic wings but no other demonic traits only qualify for the wings tag.
- Gender: Males use demon.
- Japanese: 悪魔っ子
- Slave Tags: Female - with notable synonyms devil girl and succubus.