The lucifer clones were four clones created by Lucifer after he was expelled by heaven by God that represented different aspects of his personality. Together, they tried to overthrow god, but they were unable to cooperate and due to their lack of teamwork they were defeated by god. Seemingly, only Lucifer survived; dejected, he joined Amara's Army of Darkness.
Lucifer (black) - The original Lucifer, and leader of the Lucifer clones
Lucifer (blue) - The sarcastic Lucifer
Lucifer (yellow) - The cautious Lucifer
Lucifer (red) - The prideful Lucifer
Lucifer (green) - The female Lucifer
Us? Against Metatron? Are you insane?
~ Yellow Lucifer
Silence, you fool! Metatron is a worthless pile of scrap grace compared to my genius.
~ Red Lucifer
Ohh, haven't you figured it out yet? He's sarcastic and charming. Each of us clones represents one aspect of your personality. He's prideful... he's cautious... he's sarcastic.