Lucifer Morningstar

Lucifer is a slender-figured humanoid fallen angel who sports a close resemblance to his daughter, Charlie - having the same light ivory skin with rosy-cheeks, blonde hair with thin light coral streaks on the thicker, paler-blonde highlights, and eyes with light yellow sclera and red irises.

Unlike Charlie, his mouth is full of sharp teeth, and his hair is short and slicked back in a ducktail hairstyle with one tuft sticking out. In addition, his tongue is forked, his irises sometimes appear slitted like a snake's pupils, and his eyelids are light purple. He is shorter than his daughter,[12] though not by a large amount.[13]

Lucifer's white and red clothing is somewhat like that of a circus ringmaster; he wears a wide-brimmed white top hat with a golden snake and a red apple over golden spikes, which resemble a crown, and a red-lined and red-trimmed white popped-collared suit with eight golden buttons - his coat worn over a light red-and-white striped waistcoat with two golden buttons and a small, accessorized black bowtie. In "The Show Must Go On" his suit has red and golden epaulets, resembling those of a ringmaster. He also wears a set of heeled black knee-high boots. On his left pinkie, Lucifer wears a golden ring which is presumably his wedding ring. He is also usually seen carrying an apple-topped black cane that matches his hat.

Lucifer has dark grey burn marks on his arms covering past the elbows and on his legs to above the ankles,[14] and dark grey hooves instead of feet.[15] Due to his angelic origins, he possesses six white wings with red feathers, which he can extend from his coat.

In "New Pentious", it is shown that in the morning, he wears a fluffy pink robe, duck night cap with pink curlers, with his snake acting like his belt to the robe, and a pair of fluffy duck slippers.

Despite his status as the ruler of all of Hell, Lucifer possesses an eccentric, whimsical, and dramatic nature, acting very over-the-top in most situations. He switches between being silly and theatrical, to awkward and sad. Like Charlie, he is ambitious in his beliefs, and according to the "Story of Hell" book Charlie reads in "Overture", he was an idealistic dreamer whose desire to gift humankind with free will led to the accidental creation of Hell and his subsequent banishment there, which caused him to give up on his goals, falling into isolation and deep melancholy, coping by crafting and hoarding tons of rubber ducks.

Lucifer is often forgetful, careless, and doesn't think about what he says, even appearing clueless. For example, when confronting Adam, he misworded a verbal threat as a sexual innuendo and smiled proudly, and when Charlie corrected him, he forgot what he said. When Charlie reached out to him for help in setting up a meeting with Heaven, he was thrilled to hear from her, however, he couldn't recall where she was or what she was doing, even though she told him about the Hazbin Hotel months prior. In his first meeting with Vaggi, he called her "Maggie" right after being told her name, and refers to her as "Charlie's girlfriend" multiple times throughout Season 2. He also had no clue of Angel Dust's name in "It's A Deal" either.

Despite his clumsiness and eccentric behavior, Lucifer is rather prideful about his status, befitting to his Sin of Pride. When he came to visit the Hotel in "Dad Beat Dad", he immediately started to criticize it and dismissed Charlie's ideas for it, saying that sinners are horrible and can't be redeemed.