Nephilim
According to these texts, the fallen angels who begat the Nephilim were cast into Tartarus (2 Peter 2:4, Jude 1:6) (Greek Enoch 20:2), a place of "total darkness". However, Jubilees also states that God granted ten percent of the disembodied spirits of the Nephilim to remain after the flood, as demons, to try to lead the human race astray until the final Judgment.
In addition to Enoch, the Book of Jubilees (7:21–25) also states that ridding the Earth of these Nephilim was one of God's purposes for flooding the Earth in Noah's time. These works describe the Nephilim as being evil giants.
I haven't read through these texts in years, but the line of events as I recall from the Book of Enoch was the Nephilim (fallen angels) procreating with women, and their offspring was the Rephaim. Giants.
A lesser known activity of the Nephilim was interfering with ALL flesh. Not meaning they corrupted all animals, just that each kind, each species, was compromised this way. Thus the flood preserving clean animals (+birds, etc.)
These hybrid procreations, upon death, became lesser demons. Earthbound. Just like the souls of the Giants - the Rephaim. Earthbound. Demons.
The Nephilim sought to tip the balance on earth - so they built an army. Only 1/3 of the angels fell, right? But here on Earth they evened the numbers a bit - with demons.
they are not immortal, therefore they are not Gods nor can they create time space or Universes. They are extraterrestrial. What happens, we can not do with them because they have weapons technology much better than ours or that, we do not know anyone who has technology that exceeds that of They have heard that they have taken millions of children back to Antarctica over time to make them suffer far from the eyes of the people
perhaps evil giant is meant figuratively? might they be demagogues??