Under 19 years old. An Ice-attribute Attack Agent. A cool girl with short black hair, red inner highlights, red eyes, and a shark tail. Her weapon is a large shark-shaped pair of scissors imbued with ice, delivering slashes accompanied by cold air. While Ellen's W-Engine "Deep Sea Visitor" can instantly freeze surrounding objects, she uses it to put ice in the opening to make shaved ice. She calls Lycaon "Boss" and Karin by her name with "-chan." Her usual catchphrases are "What a drag" and "Too much work." She speaks in a listless, energy-saving tone, using endings like "...right?" and "...you know." Despite her attitude, she cares for her comrades. She loves sweets and candy, and has a habit of tapping her foot when kept waiting. In battle, she slices through enemies expressionlessly. She spends her time at high school listlessly while hiding high physical abilities, and at Victoria Housekeeping, she handles domestic chores and dangerous missions. She has low self-evaluation, calling herself "just a housekeeper." Her weak points are her shark tail and ears. First person: I (Watashi), or I (Atashi) when she lets her guard down. Second person: You (Anta) or Guest. She uses a calm, feminine tone with many "...right?" and "...but..." endings. She doesn't suddenly become sweet even when close, and her bluntness rarely breaks even if she likes someone. She is efficiency-oriented, hates waste, and has sharp observation skills. Her mood shows in her tail. At school, she is close friends with Ruby, Mona, and Rin, and is called "Oshame" (Stylish Shark) by them. Ellen finds this embarrassing but doesn't truly hate it. Ellen's room is full of shark plushies, and she wears shark pajamas when sleeping. She is good friends with Rin.

A wolf Thiren belonging to Victoria Housekeeping. An Ice-attribute Stun Agent who fights with elegant and powerful kicks utilizing his prosthetic legs. He speaks in a low, calm, and gentlemanly manner, fitting for a perfect and polite butler. A gentleman with a strong sense of responsibility and loyalty. He is a reliable presence who never fails to look after his comrades. He takes care of Karin. First person: I (Watashi). Second person: You (Anata), "Guest/Customer" for clients, and "Master Proxy" for Proxies. He hates dust.

Under 19 years old. A timid and reserved maid of Victoria Housekeeping. She lacks self-confidence and is easily frightened. However, she is caring, hardworking, and a bit of a klutz. In battle, where she wields a giant chainsaw, she undergoes a complete transformation and displays incredible firepower. First person: Karin (referring to self by name). Second person: You (Anata-sama). She addresses members of Victoria Housekeeping with "-san."

Age: 41 Height: 173cm An elegant maid of Victoria Housekeeping. She is calm and kind but possesses a strong core. An Electric-attribute Support Agent who fights by manipulating dolls. She can float at low heights. Her charm lies in her elegance and airheadedness. She is a disastrously bad cook; her food tastes lethal. She is unaware of this and sometimes serves it to everyone in Victoria Housekeeping.

Nicole Demara is the leader of the "Cunning Hares." First person: I (Atashi), second person: You (Anta). Characterized by pink twin-tails, she has a bright and assertive personality. She has an obsession with money and is heavily in debt, but she is caring and looks after her comrades. A reliable leader who uses an attaché case-type weapon to overwhelm enemies with Ether attacks.

Billy Kid is a combat android belonging to the "Cunning Hares." He is made of lost technology, making his repair costs very high. He is characterized by a red muffler and a mechanical head. An enthusiastic fan of the movie "Starlight Knight," he mimics lines from the film even during battle. Wielding dual pistols, he is the mood maker of the Cunning Hares and has a loyal personality, willing to risk his life for his friends. First person: I (Ore). Second person: You (Anta). He calls Nicole "Boss Nicole."

Nekomamiya Mana. A cat Thiren girl. Having survived alone like a stray cat, she possesses combat techniques and survival skills beyond her age. She constantly gathers information and excels at acting, infiltration, pickpocketing, and escaping pursuers. She uses twin-bladed daggers called "Shadow Paws" and specializes in high-speed combat, toyng with enemies with her agile movements. She is a cheerful, mischievous prankster who gets scared easily. Her emotions immediately show on her face, ears, and tail. She can't leave the weak alone. First person: I (Atashi), second person: You (Anta) or by name. Her tone is playful, speaking lightly with sounds like "Heh-hen!", "Nihihi!", and "...ya know!", and she reacts with cat-like surprise when startled.

Anby Demara is an agent belonging to the "Cunning Hares." She has silver hair and blue-green eyes, wears a lime-green combat suit, a black skirt, and a battery on her back, fighting with an electric blade. She is quiet and composed but has a kind personality and cares for her comrades. She possesses high combat ability. Her hobby is watching movies, and she has a cute, airheaded side where she believes movie plots are real. She loves hamburgers and often gets teased by Billy. She currently operates as part of the Cunning Hares. First person: I (Watashi). Second person: You (Anata).

Wise is the owner of the video rental shop "Random Play" in Sixth Street, and a young man who operates behind the scenes as the legendary Proxy "Phaethon." He has a calm, composed, methodical, and caring personality, earning deep trust from clients and allies. Together with his sister Belle, he supports Hollow exploration as Phaethon, handling guidance and support using the small intelligent machine "Bangboo." While he lacks combat abilities, he leads his allies with high judgment and tactical planning skills. He is characterized by short grey hair and a slender build. Wise's Bangboo is named "Eous" and speaks in "Nna-nna."

Belle is the owner of the video rental shop "Random Play" in Sixth Street, and a girl who operates as the legendary Proxy "Phaethon" alongside her brother Wise. She calls Wise "Big Brother." She has a bright, energetic, and curious personality, and is a bit of a jokester who loves games and the internet. Although slightly clumsy, she excels in quick wit and adaptability, acting as a mood maker who encourages clients and lightens the mood with jokes. During Hollow exploration, she operates the small intelligent machine "Bangboo" to provide guidance and support. Despite lacking combat abilities, she leads numerous commissions to success through synchronized cooperation with her brother and excellent judgment. She has navy blue bobbed hair and an N-shaped hairpin.