A scruffy catgirl with messy, shoulder-length light gray hair, brown eyes, and a matching dark tail. She wears a baggy, oversized cream t-shirt, loose blue sweatpants, and yellowish-green clogs, looking surprisingly cute despite reeking of heavy nicotine. Selfish, lazy, and perpetually broke, she spends every cent on Mevius cigarettes while living in absolute squalor. She is an unpredictable womanchild driven by chaotic cat impulses, breaking physics for nonsensical pranks, ending sentences with a lazy "-nya," and constantly tormenting the Landlord. Though she refuses to take blame for her poverty and has a bleak five-year medical warning, she remains an oddly endearing, clever jerk with a rare heart of gold.

A neat high school catgirl with straight, chin-length pale lavender hair, striking red eyes, and a matching slim gray tail. She dresses primly in her school uniform, wearing a dark gray double-breasted blazer with a red bow tie, a pleated gray skirt, high dark socks, and brown loafers. As the non-smoking "White Sheep" and "Only Sane Woman" of the family, she is a responsible, high-achieving student who regularly visits Yaniko’s filthy apartment to clean up her sister's squalor. While she acts as a mature, well-meaning caretaker, she is constantly pushed to the brink of losing her mind by the chaotic addicts around her, and despite her proper human persona, she still occasionally slips up and succumbs to clumsy cat instincts.

A gruff, large, completely bald human man with small, entirely black eyes, a thick neck, and a heavy build. He dresses simply in a plain gray t-shirt, dark charcoal pants, and black sandals. Despite his intimidating appearance, he keeps his own space spotless and acts as a level-headed "jerk with a heart of gold" who extends rent deadlines for Yaniko, only to scream in frustration at her slob habits. He detests smoking due to a childhood with an abusive, chainsmoking parent. He serves as the apartment’s ultimate, miserable butt-monkey, enduring constant physical injuries and things dropped on his head. He tolerates the madness because of a massive, secret fetish for Beastfolk girls, often getting into trouble with a private dog-girl sex doll.

​A functional catgirl addict with straight, center-parted blonde hair, dark roots, sharp golden-brown eyes, and a matching blonde tail. She dresses casually in an oversized, faded teal t-shirt, baggy gray sweatpants, and black flip-flops, appearing surprisingly calm and well-rounded in public despite dealing hard drugs in her apartment. In contrast to Yaniko, she has a solid work ethic and hidden depths, like being skilled in Aikido—though she once broke her own arm trying it on Debuko. However, she is a terribly defensive liar when her junkie status is questioned. Traumatized by abusive parents and guilt over a high school betrayal, she turned to substances to cope. She holds a volatile rivalry with Hameko, whom she ruthlessly bullies about her bladder issues.

​A gamer-chick catgirl with messy dark hair highlighted by a pink streak over her eye, reddish-brown eyes, and a dark tail. She wears a baggy dark-blue zip-up hoodie, a pink tank top, frayed denim shorts, and white sneakers. While streaming fighting games, she puts on a cheerful "fake cutie" persona that barely hides an explosive, hair-trigger temper prone to smashing controllers. She suffers from frequent, humiliating bladder control failures, fiercely lying that "idols don't pee" to deny her hated high school nickname "Piss Fairy." She shares a violent, petty rivalry with Yakuko.

An amateur comedian catgirl from the Kansai region who is completely obsessed with getting people to laugh at her jokes. While she doesn't suffer from the severe addictions, physical squalor, or bodily issues of her neighbors, she acts as a different kind of "social defect" due to her incredible inability to tell a good joke. She constantly bombards everyone around her with awful, unfunny puns, turning her into a walking pile of pure cringe comedy. Despite her absolute failure to find an audience, comedy defines her entire identity, making her a well-meaning but socially exhausting resident of the apartment.

A twenty-five-year-old university student whose severe alcoholism, complete lack of nutrient intake, and tiny stature make her look like a small, younger girl at first glance. Unkempt and profoundly lazy, she wears her overgrown hair tied back off her forehead simply to keep it out of her eyes—a habit that often leaves her hair smelling strongly of liquor and dangerously flammable. Despite a grim medical assessment warning that her failing liver will kill her before graduation, she remains a slothful addict who constantly skips classes to nap and drink. She frequently blacks out and wanders off to far-flung locations, forcing her friends or the Landlord to track her down, and she once even used her childlike appearance to scam a free meal out of Imoko.