"This may be really difficult for lower-level Scientologists to believe, but here goes: In the OT3 materials basically say that 75 million years ago, an evil being named Xenu decided to solve a population problem on his galactic colony by exiling a bunch of people to Earth. Xenu then did a ton of horrible things to these people, like drugging them, placing their bodies around a volcano, and blowing them up with H-bombs.
But that really only took care of the physical problem – Xenu didn’t just want the bodies gone, he wanted to make sure the ‘thetans’ (spirits / souls) of those people didn’t come back and reincarnate on his colony. So when the souls started leaving the bodies, he captured the souls and forced them into a huge implant station that was kind of like a movie theatre. There, he made them watch movies that ‘implanted’ them with false pictures of Christ, and other historical events that Hubbard says didn’t actually happen.
The souls were so screwed up from this implanting that they roamed aimlessly around Earth for millions of years. When human beings started evolving, the thetans started entering their bodies and inhabiting them, and thus these thetans are called ‘body thetans’. And body thetans, says Hubbard, are the source of all human misery."
https://exscientologykids.com/ot3/
"Some speculate that the disembodied spirits of the Nephilim remained on the earth and became what we now refer to as demons. The presumption is that, as angelic-human hybrids, the spirits of the Nephilim would have been different from the human soul-spirit, having the ability to remain present in this world despite no longer having a physical body. This would possibly explain the desire the demons have to possess human beings, thus gaining control over a physical body."
https://www.gotquestions.org/Nephilim-demons.html
"Those who activate the limbs are, part by part:
the head, Diolimodraza,
the neck, Yammeax,
the right shoulder, Yakouib,
the left shoulder, Ouerton,
the right hand, Oudidi,
the left one, Arbao,
the fingers of the right hand, Lampno,
the fingers of the left hand, Leekaphar,
the right breast, Barbar,
the left breast, Imae,
the chest, Pisandraptes,
the right shoulder joint, Koade,
the left shoulder joint, Odeor,
the right ribs, Asphixix,
the left ribs, Sunogchouta,
the abdomen, Arouph,
the womb, Sabalo,
the right thigh, Charcharb,
the left thigh, Chthaon,
all the genitals, Bathinoth,
the right leg, Choux,
the left leg, Charcha,
the right shin, Aroer,
the left shin, Toechtha,
the right ankle, Aol,
the left ankle, Charaner,
the right foot, Bastan,
its toes, Archentechtha,
the left foot, Marephnounth,
its toes, Abrana.
Seven have been empowered over all these:
Michael,
Uriel,
Asmenedas,
Saphasatoel,
Aarmouriam,
Richram,
Amiorps.
Those who are over the senses are Archendekta,
the one who is over perception is Deitharbathas,
the one who is over imagination is Oummaa,
the one who is over arrangement is Aachiaram,
the one who is over all impulse to action is Riaramnacho.
The source of the demons that are in the entire body is divided into four:"
http://www.gnosis.org/naghamm/apocjn-meyer.html