I am not that familiar with the concept of fallen angels in Judeo-Christian traditions but in Islamic traditions Lucifer is said to be a Djinn. He and his companions, a group of powerful demons have the ability to possess human beings. There is the story of a group of fallen angels corrupting the human seed during Noah P.B.U.H's time mentioned in the book of Enoch. The fallen angels possess different magical powers. They marry human females which results in the birth of a hybrid race the Nephilim.
All 5m group concepts are based on different stories from mythology. Tvxq were called gods in their mythology.
Prior to the rebellion against God The Creator, Lucifer was an Archangel who was created with exquisite beauty and extreme talent in music. He was a cherubim in charged of worship...he was a worship leader...
When he was consumed with pride, he wanted to "be like God, and wanted to usurp The Almighty God's power..." Then God's judgement came upon him and he was banished from Heaven... he fell from Heaven and took with him one third of the angels who also rebelled against God...
Isaiah 14:12-17
New King James Version
The Fall of Lucifer
“How you are fallen from heaven,
O Lucifer, son of the morning!
How you are cut down to the ground,
You who weakened the nations!
For you have said in your heart:
I will ascend into heaven,
I will exalt my throne above the stars of God;
I will also sit on the mount of the congregation
On the farthest sides of the north;
I will ascend above the heights of the clouds,
I will be like the Most High.’
Yet you shall be brought down to Sheol,
To the lowest depths of the Pit.
“Those who see you will gaze at you,
And consider you, saying:
‘Is this the man who made the earth tremble,
Who shook kingdoms,
Who made the world as a wilderness
And destroyed its cities,
Who did not open the house of his prisoners?’
*****
These fallen angels led by Lucifer who is also known as Satan ("The Adversary"), were there when God created the first man, Adam and his wife, Eve... as the story in Genesis chapter 3 describes... When Satan in the form of a serpent (a reptile) tempted Eve to disobey God and influenced Adam to also disobey, sin entered into their spirits... causing them to die spiritually... their spiritual death disconnected their intimate communion and relationship with God...therefore they were banished from the garden of Eden...and had to struggle to live a life separate from God, The Creator... Only through Jesus Christ, The Redeemer and Savior, can humans reconcile and reconnect with God Almighty...
As part of their punishment, Adam had to toil and work hard to provide for Eve and their family...and Eve had to endure the pain of pregnancy and childbirth...even as she continues naturally to desire for her husband's affection...
Interesting correlations in relation to KPop's symbolisms:
Satan = serpent = reptile = venom = poison = death
Pink venom = female poison = Eve's fall = death by seduction
(Note: Satan seduced Eve to sin first, using a visual channel: shiny, red, delicious-looking fruit...and by auditory channel: using persuasive, nice-sounding words...In turn, Eve caused Adam to sin along with her...by simply giving Adam the same fruit...which they both ate...)
The Fallen Angels...the Nephilims...Noah's flood (Genesis 6)...
When the fallen angels took notice of the beautiful human females, they had intercourse with them and their offsprings became what is known as Nephilims...
This was the first case of hybridization...the corruption of the human species (human genes+fallen angels=nephilims known with extraordinary sizes and abilities...)
Note: Transhumanism (merging humans with machines is another form of hybridization). Satan always wants to tamper with God's engine of creation...his strategy is to corrupt the human DNA...