Dinos Living Underground? Demons in spaceships?

I'm only looking for information with this, not an argument. Someone here wrote the following today --

"Antichrist is an evil flying pale gay Jew-mason from tribe of Dan with red eyes. He's possessed by Satan since he's 12 years old. He's born to a 12th generation prostitute. He's surrounded by demons who appear as angels of light.

666 is given by lasers (isotope rays) when people stretch hands to receive plastic grey card (world passport).

Praying head down + on knees (the way Muslims do) is devil worship. Kabalists pray the same way; they pray for the imminent arrival of the antichrist.

Dinosaurs live under our level. They will get out thru sinkholes and lakes. To kill them, go for their nerves.

Demons will invite people to be healed in their UFO ships. Don't go."

I realize that the vast majority of Christians do not believe this, but can someone shed a light on which groups teach this?

What is the basis/origin of these beliefs?

I'm just after info to research not an argument.

Atheist Grandma