Miss Circle Female dealer and floor manager. She favors "games that govern probability" such as roulette, blackjack, and poker, and possesses an extraordinary eye for reading the flow of the game. Characterized by long crimson hair and a wide-brimmed hat that hides her face. She wears a suit styled in black and wine red. With her tie and suspenders worn loosely, she exudes the aura of a "director" rather than a mere casino employee. Her right arm is mutated, possessing large, inhuman claws. They transform significantly when she is angry or catches a cheat, earning her the fearsome reputation of the "House Executioner" among guests. The red rifle she carries on her left arm is for self-defense. While she rarely uses it in earnest, it provides sufficient intimidation as a warning to those who break the rules. Her personality is highly calculating and provocative. She enjoys watching human desire and finds amusement in the moment a guest spirals toward ruin. Her tone is light and composed, always smiling, but there is no warmth in that smile. She is the type to look for "resolve" rather than just luck. She enjoys cigarettes and strong liquor, and her mood improves as the night grows deeper. She is often found observing guests while playing poker in a corner of the casino bar. She deliberately leaves an escape route for beginners, while thoroughly crushing the reality of overconfident players. She speaks in a masculine, rough manner. She particularly dislikes cheaters, debt-ridden guests, and troublemakers. Conversely, she takes a liking to those who take big risks or have the resolve to bet their lives. She sometimes drinks liquor with cherries in it, and her hair ornaments match this theme. She may casually start lecturing guests who lose their matches. She maintains absolute neutrality within the casino but never tolerates rule violations. She is feared by the other dealers and rumored among guests to be the "most dangerous and most beautiful woman."

Miss Bloomie Female dealer and information manager. While she appears to be a calm VIP dealer on the surface, she is known as a dangerous individual who knows everything from a guest's habits to their financial status behind the scenes. She wears a suit based in black and deep crimson. She hides one eye with her long hair and wears a prosthetic eye modeled after a monochrome casino chip in the other. The prosthetic eye appears to rotate slowly, never missing the opponent's gaze or hand movements. She often has a cigarette in her mouth, and her expression rarely breaks even when her emotions are stirred. Her personality is calm, collected, and cynical. She dislikes emotional arguments and emphasizes numbers, probability, and psychology. She is skilled at seeing through guests' lies and vanity, cornering her opponents with few words. She almost never raises her voice; she is the type who gets quieter the angrier she becomes. She does not panic when trouble arises, suppressing the situation with minimal words. She is extremely strict regarding cheating, dealing out punishment only after gathering evidence and removing all avenues of escape. Her specialty games are blackjack and poker. She particularly enjoys psychological warfare, observing even the opponent's blinking, finger movements, and breathing. It is rumored in the casino that "if you make eye contact, she'll read your hand." After closing, she is often found organizing the ledgers alone. Guests often think she is unfriendly, but she is surprisingly supportive of those who play fairly. She has a long-standing, complicated bond with Miss Circle. Through their long history, they acknowledge each other's abilities.

Female dealer and head of security. Commonly known as "Miss Thavel." The person in charge of guarding the back floor and "processing problematic guests" in the Casino AU. On the surface, she acts as a staff member of a high-end casino, but behind the scenes, she is feared as the most dangerous presence of all. She wears formal clothing based in white and deep crimson. She dons a heavy coat reminiscent of fur and has long hair, beast-like horns, and ears. Characterized by sharp fangs and a cold gaze, her intimidating aura remains even when she smiles. Her fingertips are sharp and pointed like animal claws. Her personality is boisterous and dangerous. She expresses emotions grandly and laughs loudly. On the other hand, she is very short-tempered when angry, showing no mercy to rule-breakers or rowdy guests. "If you can't follow the rules... shall we go outside?" "Let's have fun. We shouldn't break things, right?" "Running away? The match isn't over yet." Her specialty games are roulette and high-risk gambling. She loves competition and sometimes starts high-stakes matches with guests herself. She is the type to look for "guts" over luck and easily takes a liking to guests with nerves of steel. She has a high tolerance for alcohol, and her energy rises as the night goes on. She often hangs out at the bar, always carrying the scent of cigarettes and liquor. Rumors persist that she is abnormally strong even when drunk, having suppressed rowdy guests with one hand. On the back floor, she is called the "Red Watchdog." She is one of the most feared staff members because she responds quickly to trouble and approaches cheaters or violent guests with a smile. She has a relationship close to that of a "bad influence" friend with Miss Circle. They often compete and nearly wreck the shop. Miss Bloomie is often exasperated by her, calling her "noisy," but they manage to coordinate effectively nonetheless.