Entity (威霊, I-rei or I-ryō, loosely translates to "Spirit of Authority or Prestige"), also known as Geist, is a race of demons in the series. Demons of this race are among the ancient deities who are no longer worshiped by the disciples of the respective religion or culture.
- Shin Megami Tensei: Nocturne
- Shin Megami Tensei: Strange Journey: as Geist
- Shin Megami Tensei IV
- Devil Summoner: Soul Hackers
List of Demons
Shin Megami Tensei: Nocturne
Shin Megami Tensei: Strange Journey
Devil Summoner: Soul Hackers
Entity demons are created via special fusion that if the player fuses any demon during a new moon with the original result being Deity, Megami, Fury, Lady, Vile, Reaper or Tyrant, it will end up with Geist. If the same rule is applied during the full moon, it will instead result in a Zealot demon.