Who are the three fallen angels of the Bible?

Answer 1

Lucifer, Gabriel and Castiel

Another Answer:

Lucifer is NOT the name of any fallen angel. Lucifer only means bright light, as Isaiah refers to a Babylonian King that he prophises about. So, despite Fairy Tales there are no canonized Scripture citing names of any fallen angels! Also, Gabriel is an archangel, no scripture describes him as a fallen angel.

Answer 2

There are more than 3. In the symbolic writings of the Book of Revelation, 33 1/3% of angels are fallen (some have calculated the entire population of angels as being 100 billion):

Revelation 12:3-12 English Standard Version (ESV)3 And another sign appeared in heaven: behold, a great red dragon, with seven heads and ten horns, and on his heads seven diadems. 4 His tail swept down a third of the stars of heaven and cast them to the earth.

A few verses later, the leader of these is called 'Satan' being sent to the Earth:

7 Now war arose in heaven, Michael and his angels fighting against the dragon. And the dragon and his angels fought back, 8 but he was defeated, and there was no longer any place for them in heaven. 9 And the great dragon was thrown down, that ancient serpent, who is called the devil and Satan, the deceiver of the whole world he was thrown down to the earth, and his angels were thrown down with him

The Old Testament never explicitly mentions the name of the character known as the devil. Instead, it calls him 'the accuser' in Zechariah 3:1-2; the seducer in 1 Chronicles 21:1 and the heavenly prosecutor or 'adversary' in Job 2:1. The 'Oxford Dictionary of the Jewish Religion' states the term 'satan' is found in their pseudepigrapha and apocalypses but is mistakenly interpretation of Isaiah 14:12 as the cause for 'satan' being a fallen angel:

7 Now war arose in heaven, Michael and his angels fighting against the dragon. And the dragon and his angels fought back, 8 but he was defeated, and there was no longer any place for them in heaven. 9 And the great dragon was thrown down, that ancient serpent, who is called the devil and Satan, the deceiver of the whole worldâ€â€he was thrown down to the earth, and his angels were thrown down with him.

Lastly, some scholars interpret the 'sons of God' in Genesis 6:1-6 to be these same fallen angels while others interpret the 'sons of God' to simply be the line of Cain.