Carmilla Carmine

She has light-colored hair pulled back into a ponytail and eyes with bright red sclera and white irises. She wears round glasses with red lenses, a white lab coat, long black gloves, and silver ballet flats.

Clara is distinguished by her crimson skin, short, curly cream-colored hair in a ponytail, dark lips, and matching red eyes with white irises. Her outfit includes a black top, dark gray jeans with a belt, black fingerless gloves, and ballet flats.

Character and role in the plot
Both sisters are quiet, but they demonstrate professionalism in their work. They care for their mother and each other, and they worry when they see Carmilla sad.

Their primary tasks are to collect angelic weapons left over from the Decimation and deliver the Mother's products to their sinful clients. In the episode "Scrambled Eggs," they deliver the weapons to Sir Pentious at the Hazbin Hotel.
Interesting details
The sisters' names refer to the heroines of Tchaikovsky's classical ballets: Odette from Swan Lake, Clara from The Nutcracker.

Owner: The Circle of Pride is owned by Lucifer Morningstar, the King of Hell and Charlie Morningstar's father.
Residents. This is where sinners reside—the souls of the dead who have been sent to Hell for their sins. However, sinners cannot leave the Circle of Pride, either due to physical limitations or outright prohibition. In contrast, demons born in Hell (such as imps) can travel between circles using the elevator system.
The Capital. The largest metropolis of the Circle of Pride is Pentagram City. It is the center of demonic life, with skyscrapers, luxury, political intrigue, and fierce competition. Among its notable residents is the powerful demon Alastor, known as the "Radio Demon."

Landscape Features. Outside the cities, the landscape consists of jagged, barren mountains, valleys, and cliffs, tinted in deep red and burgundy tones. Vegetation is almost nonexistent, with only tufts of dark grass on the plains. The sky in the Circle of Pride is red, turning to a dark reddish-purple at night, with red and white stars. In Pentagram City, a red apparition in the shape of a pentagram can be seen above the city.
Overpopulation and Exterminations. The Circle of Pride suffers from massive overpopulation. To solve the problem, the Exorcists, led by Adam, regularly carry out Exterminations—attacks on sinners. According to a deal with Heaven, however, the Hellspawn of the Circle of Pride are to be spared from these purges.
Weather peculiarities. Acid rain may fall in the Circle of Pride, and lightning strikes produce screams instead of thunder.

the appearance of sinners depends on their actions during life and death

Intelligence - Carmilla correctly guessed that Vaggie was once an Exorcist, judging by her appearance and fighting style with angel weapons. She was also able to identify the Exorcists' weakness and a way to kill them.
Weapons Knowledge - Since she is in the weapons business, she apparently has extensive knowledge about them, including the details of angelic weapons.
Musical talent - she can sing.
Bilingualism - Carmilla is fluent in Spanish and English.
Ballet Combat - She can fight using ballet steps and movements.
Ballet Shoes – As Carmilla demonstrated during her sparring with Vaggie and in her battle with the Exorcists, her ballet shoes are an angelic weapon. Carmilla's fighting style relies heavily on kicks, and the shoes significantly enhance her attack power, allowing her to easily decapitate an Exorcist.
Dancing: Carmilla is said to be a very precise and acrobatic dancer, similar to a ballerina.

Carmilla is generally calm and level-headed, but there are things that anger her: insults to her loved ones (especially Zestial) or threats to her family. She genuinely cares for her two daughters (Odette and Clara) and is willing to go to great lengths to protect them—even killing an exorcist. She strives to avoid large-scale violence and war, but acts decisively in times of crisis.

She also has a sense of pride.

Capabilities
Immortality: As a Sinner, she does not die from disease, aging, or normal injuries, but can only be permanently killed by angelic weapons.
Agility, speed, and balance: Allows her to dodge attacks, move very quickly, and even walk on railings.
Combat skills: Proficient in the use of weapons, including angel steel.
Other skills: technological savvy, musical talent, leadership skills, bilingualism (speaks Spanish and English).
Demonic abilities: Some descriptions mention enhanced senses (sight, hearing), the ability to teleport (leaving behind a column of black, poisonous smoke), and pyrokinesis (creating hellfire).

Carmilla is a tall, slender demoness with light gray skin. She has long white hair, styled into large horns with several black strands. Her face bears a mask-like mark that encircles slanted eyes with white irises and red whites. Her hands are white, her nails painted black, and they are quite large in proportion to her body.
Her outfit resembles a ballerina's costume: a black off-the-shoulder dress with white buttons and white stripes on the studded skirt and a bright pink lining, black waist-length stockings with white ballet laces, and gray pointe shoes.

She is one of the oldest rulers, a sinner

The Structure of Hell
The geography of Hell is divided into Seven Circles (Rings), as first mentioned in the lyrics of the song "You Will Be Okay." Each Circle has a unique atmosphere. For example, in the Circle of Pride, the sky is red, while in the Circle of Lust, it is blue.
Demons born in Hell can travel through the Circles via an extensive network of elevators. Sinners are confined to the highest Circle—the Circle of Pride—due to a magical barrier that physically stops them.
The capital of Hell is located in the Circle of Pride - Pentagram City.
Hierarchy
Hell has a crude hierarchy, determined by authority. The ruler is Lucifer Morningstar, a fallen angel and the King of Hell. His daughter and heir apparent is Charlie Morningstar.
Hierarchy levels (top to bottom):
Lucifer Morningstar is the King of Hell.
Charlie Morningstar is the princess of Hell and heir to the throne.
The Seven Deadly Sins are demons that embody one of the Seven Deadly Sins.
Ars Goetia - demons-spawns of Hell with royal status (for example, Prince Stolas).
Overlords are demons that possess significant power or influence.
Sinners are immortal demons who were once humans on Earth, but who, having sinned, were damned to Hell.
Demons born in Hell (succubi, incubi and other types of demons).
Demons and hellhounds are the lowest class in a hellish society.
In the absence of Lucifer (and possibly his family), Satan steps in as leader, demonstrating that he has more influence than the other five deadly sins.
Legislative structure
Despite the chaotic environment, Hell has its own laws and rules—the so-called "demonic law." These rules are enforced by royalty (such as the Morningstar family) and the Seven Deadly Sins. The chief judge in Lucifer's absence is Satan, the Sin of Wrath.