|Shin Megami Tensei||Akuryou clan|
|Shin Megami Tensei II||Akuryou clan|
|Shin Megami Tensei Nocturne||Haunt clan|
|Shin Megami Tensei if...||Akuryou clan|
|Raidou Kuzunoha vs. The Soulless Army||Skill order|
|Persona 3||Fool arcanum|
|Persona 4||Fool arcanum|
|Digital Devil Saga 2||Brute race|
According to the Christian Bible, Legion, also known as the "Gadarene demon" (named after the country where it was encountered), was a multitude of demons that possessed a single person at the same time. In the story, Jesus travelled to Gadarenes and met a man possessed by an evil spirit. Jesus instantly recognised the presence of the demon and spoke with it, asking its name. The demon answered "My name is Legion: for we are many."
The demons that composed the Legion knew of Jesus's identity as the son of God, and begged that he spare them from being cast down to the abyss of Hell. Jesus showed compassion for Legion, but still wished to save the man, so cast the demons out of the man and into a herd of pigs. The pigs then drowned themselves in the Sea of Galilee.
 In game
In Devil Summoner: Raidou Kuzunoha Legions are a special kind of demon created when fusion fails. There are several types of Legions that can result from a failed fusion, although they all count as the same demon. They are;
- Common Legion: Weak to everything, very poor stats.
- Rare Legion: Poor stats, but carries the unique skill "Regenerate".
- Life Legion: Uses healing skills, drains Mind.
- Death Legion: Uses death skills, drains Death.
- Physical Legion: Uses physical skills.
Kazuma Kaneko's Legion design references the quote "My name is Legion: for we are many." and the multitude of demons that possessed a single person at the same time (the demons that made up Legion) by giving the design many faces.
Persona 3: Assault Dive, Pulinpa, Rebellion, Sexy Dance, Panic Boost, Bewilder