Job 1:6 "Now there was a day when the sons of God came to present themselves before the LORD< Satan also came among them".
This is to indicate that Satan was also a son of God. As for the demons being the spirits of the dead Nephelium, sons of the watchers, you should read Enoch and find out. You seem to feel you are superior to Enoch, well, then please tell us the source of the demons in Rev 16:13 who are from the "false prophet" and the "beast", or those being cast of the swine by Yeshua? And there is nowhere stating that the "watchers" married the daughters of men. It said they came into them, such as had intercourse with them. According to the law, if a man raped a single woman, there was a price to be paid (Deuteronomy 22:28-29). Apparently, the angel of the LORD sat down and had dinner with Abraham as well (Genesis 18:8). "The sons of God" liked what they saw and took them as wives, whomever they chose. There was no asking their fathers for permission or paying a marriage dowry. Also, the "watchers" who watch men, are angels (Rev 1:20-2:1 & 5:6), and according to Yeshua, do not marry (Mt 22:30). The 7 eyes (Rev 5:6), the watchers "are the seven spirits of God, sent out into all the earth" to "scan the whole earth" (Zechariah 4:10), as in watching the whole earth. As for your "Bible", and its canon, that was of man, particularly Athanasius, in 367 A.D. and is nothing but a mix of the "message" of the "enemy"/"devil" and the "message" of the "son of man" in the same "field" (NT book) (Mt 13:25-49). As for "Revelation" it spans from Nebuchadnezzar, the first head of the 7 headed beast, to the last head of the beast, the 7th head (Revelation 17), who was the heir of Julius Caesar (5th head), Constantine, the "beast with two horns like a lamb", the "two horns" being the Christlike leaders of Constantine's Roman church, those being Peter and Paul, for whom Constantine glorified by building them both a basilica, which is a church in the shape of a pagan cross, in line with Paul's false gospel of the cross/grace/lawlessness. We are now in the era of the 8th head of the beast, one of the 7 (Rev 17). We are also at the end of the 6th millennium, so the day of the LORD, the day of rest, the 7th millennium of rest, is just behind the door (Mt 24:29-31). Your "heroes of renown, are the gods of old, with Satan/dragon, the "ruler of the world", being the authority of the "beasts"/kings (Rev 13:4). Examples of the gods and their worship is seen in the modern-day names of the days of the week, such as Wednesday for the god Woden (Mercury), and Sunday, for the day of the sun, that being Sol Invictus.