Lucifer Morningstar/History

While his origins are widely obscured, Lucifer is said to be a being known as a Fallen Angel, and is the ruler of all Hell on the basis of his angelic power, placing him at the top of the realm's power hierarchy. He is also the husband of Lilith and the father of Charlie.

At some point, he also started a successful theme park called Lu Lu World that proved to be quite popular with the denizens of Hell. Another demon, Mammon, also claims to be an acquaintance to Lucifer.

Though he plays no role in the pilot, Lucifer is referenced and alluded to many times. Shadowy figures resembling him appear during the opening song "I'm Always Chasing Rainbows". Notably, during the verse "Why have I always been a failure", his shadow materializes behind Charlie, and is later mentioned in Charlie's voicemail to Lilith.

Both possibly suggest that he is disappointed in her and her decision to starting up the Happy Hotel.

Later during the fireworks display, four demons are seen watching from a window, one of which is a red-eyed silhouetted figure wearing a large hat and holding a distinctive cane, features that strongly suggest it is Lucifer.

His visage is later glimpsed in several background images of the Happy Hotel, most notably a family portrait that catches Alastor's attention.