They are the same. If you are evil enough they will do a manifestation. There's an long interview with a guy who left the secret society. At a high enough level a demon will make an appearance.
ARE ALIENS REALLY JUST THE SAME OLD DEMONS?
Scientology's founder, L. Ron Hubbard, and the inventor of rockets, Jack Parsons, practiced occult witchcraft at Jack Parson's house that they called “The Parsonage.” The two famous men were actually working to bring in the Antichrist. As freaky as it sounds, Jack Parsons, the guy who created JPL (Jet Propulsion Laboratories) was deeply into occult practices with L. Ron Hubbard. And it was all from Crowley's evil lessons. Crowley performed occult rituals involving drugs that helped him achieve an altered state of consciousness so that entities would appear. Of course, those were demons. Here’s what else is wild: On the left is his drawing of the demon that Crowley says contacted him. He called the familiar spirit, or demon, "Lam." This entity is one of the demon spirits that gave Crowley his occult ideas, which made him the evilest man to ever live. But what does that picture look just like? Yes, it's very similar to how we often see supposed aliens (same old demons) depicted
by those who've had encounters with them.