Lucifer is a Myth because that is the Latin name of the fallen former Archangel.

Isaiah 14:12. How you have fallen from heaven, O Shining Son of the Dawn! How you, who did weaken the nations, are cut down to the ground! 13. For you have said in your heart, I shall ascend into heaven, I shall exalt my throne above the stars of God. I shall sit also upon the mountain of the congregation, in the recesses of the north. 14. I shall ascend above the heights of the clouds. I shall be like the Most High. 15. Yet you will be brought down to hell, to the lowest depth of the pit.