|“||Tonight we won, but we just plugged one hole in a very flimsy boat. Now the demons know I've no intention of returning, they'll continue to defy me. It's only a matter of time before they come back to Earth, who knows where next? Or maybe they'll just back for Charlie or... maybe you.||„|
|~ Lucifer to Chloe as he realizes that the prophecy was talking about the demons' defiance.|
The Demons in the TV series Lucifer are minor yet pivotal antagonists in its fourth season and minor characters in the fifth season. They are malevolent entities that reside in Hell under the rule of Lucifer Morningstar where they would torture any damned human soul who is sent there.
After Lucifer was banished to Hell by God, the demons were born to serve his every command. He had them torture every tainted soul who was sent there. The first soul they ever tortured was Abel, the brother whom Cain murdered, where they learned the arts of torture by torturing him.
One of the demons Lilith was sent to Hell after she was replaced by Eve as Adam's husband. She then became the mother of countless demons known as the Lilim, including Dromos, Squee and Lucifer's personal assistant and best friend Mazikeen. However, her forced separation from Adam drove her to become bitter with her children to the point that she presumably never loved them.
Eventually, in 2011, Lucifer grew bored of Hell and left Hell to Earth with Mazikeen, leaving all of the demons unoccupied.
In 2019, Eve intended on returning Lucifer to Hell so she can be his queen, and so after murdering the fanatical Father Kinley, she told him to tell the demons to arrive on Earth to bring him back. Led by Dromos and Squee, they started murdering people so more demons arrive. After Lucifer told them he was not returning, they rebelled and intended on replacing him with his Nephilim son, Charlie. They even betray Eve, saying she is not their queen.
After stealing Kinley's vial from Lucifer's penthouse, they were about to send him to Hell just as Lucifer arrived with Mazikeen, Eve and Amenadiel, Charlie's father. They fought them until Charlie was saved and Dromos was left alone. After Chloe arrived, more demons arrived and nearly killed Chloe, ultimately enraging Lucifer into unleashing his true devil form. As they kneel before him, he orders them to return, in which they do.
In the end, however, Lucifer was forced to return to Hell to keep the demons in check, knowing that they will continue to defy him for his abandonment.
Back in Check
Lucifer spent thousands of years in Hell (merely several months on Earth) overseeing the demons and getting them back in line. He would personally oversee several of the souls they tortured, sometimes even participating as well with them. Eventually, he returned to Earth after learning from Amenadiel that Michael was causing havoc in Los Angeles, placing his brother in charge until he came back. Amenadiel eventually returned very soon after God told him that Earth no longer needed a warden to manage it. This meant that the demons were now contained once more and therefore no longer a threat.
- It is ultimately revealed in the Season 4 finale that the prophecy Father Kinley spoke of was referring to the demons rebelling against Lucifer and unleashing chaos on Earth after learning that he had no intention of returning after meeting his "first love" Chloe Decker.