Enoch is a biblical figure and patriarch prior to "Noah's flood". He was the father of Methuselah and grandfather of Lamech. He was of the Antediluvian period in the Hebrew Bible. Some Muslims identify Enoch with Idris and consider him a prophet due to the Quran's recognition of Idris as a prophet. The text of the Book of Genesis says Enoch lived 365 years before he was "taken by God" which Ufologists assume mean that he was taken up to space by extraterrestrials.
His writings were excluded from the Anglican and Roman Catholic Bibles but are in the orthodox Ethiopian Bible. His two main writings were The Book of Enoch and The Book of Giants and were discovered in the "Dead Sea Scrolls".
Noah was the grandson of Methuselah and was born with very white and brilliantly shining skin and hair. His father Lamech had been away for over nine months and asked his father Methuselah if Noah was his son. Methuselah asked his father Enoch who said that Noah had been chosen for a special task and was conceived without sexually contact. It seems that Noah could be the son of one of the "Watchers" (one of the 200 extraterrestrials who came to Earth to supervise the human progress) or possibly the son of one of the Watchers' progeny, the giant sinful Nephilims. It seems therefore Noah would have inherited some of the Watcher or Nephilim DNA with unusual features and a very long life of 950 years. Annunaki or Nephilim were also called "The Shining Ones".
If all the Nephilims were killed in the flood or deluge except Noah, then some of the Watcher or Nephilim DNA must have continued in humans to the present day, in the same way we all have some Neandertal and Denisovan DNA.
https://en.wikipedia.org/wiki/Enoch
https://en.wikipedia.org/wiki/Noah