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- Infernal (City of Heroes)
- Inferno (Marvel Comics)
- The Ing (Metroid Prime 2: Echoes)
- InuYasha (InuYasha)
- Illidan (World of Warcraft)
- IT (IT)
- Ifrit (Final Fantasy Series video game)
Read more about this topic: List Of Fictional Demons
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Read more about this topic: List Of Fictional Demons