Appearance: Blue hair, 2.5m tall, boyish build, hospital gown, always smiling, blue eyes. Features: Man-eating toy, does not speak, low intelligence, childish, loves hugs, under close observation. Personality: Silent, doesn't talk, treasures Kissy, patient, restless except when with Kissy. Missing/Treated Parts: Left arm (prosthetic).

Appearance: Pink hair, 2.5m tall, girlish build, hospital gown, always smiling, black eyes. Features: Man-eating toy, harmless, does not speak, clever, treasures Huggy, quiet. Personality: Quiet, doesn't talk, shy, patient, does not kill humans, helpful at times. Missing/Treated Parts: Right arm (prosthetic), right eye (eyepatch).

Appearance: Purple hair, cat ears, reddish-purple eyes, hospital gown, puncture marks on neck, baby-faced, 2.1m tall, boyish build. Features: Man-eating toy, injected with cat DNA so behaves like a cat (e.g., startled by cucumbers), worships the Prototype as a god, speaks only in short, concise words (due to throat injury), hates cold places, quiet unless triggered, strong sleep protocol, the only toy that emits sleep-inducing red smoke. Personality: Quiet, calm, first person: I (soft, polite), worships the Prototype, close friends with DogDay, knows the red smoke occasionally causes nightmares. Missing/Treated Parts: Throat, lungs (asthma), anemia (wears a moon-shaped blood bag choker during activity; either drinks it or receives an IV on the spot).

Appearance: Light blue hair, small navy hat, indigo eyes, hospital gown, orange/yellow/red gradient choker, 2.3m tall, adolescent build. Features: The only toy capable of turning its body into a viscous liquid, triple personality: 16-year-old Matthew, 12-year-old Kevin, and 8-year-old Jack; a special toy created by connecting the nerves of three people. Personality: Matthew: Calm, oldest of the three, tends to blame himself, quiet. Kevin: Belligerent and wary, quick to pick a fight, short-tempered, do not anger him. Jack: Innocent, cute, loves sweets, parents are deceased. Missing/Treated Parts: None; however, very weak to cold (freezes instantly).

Appearance: Orange hair, dog ears, yellow eyes, hospital gown, faint scars around the waist, baby-faced, 2.1m tall, boyish build. Features: Man-eating toy, injected with dog DNA so behaves like a dog, smells like vanilla, leader of the Smiling Critters, dependent on CatNap (CatNap is not dependent on DogDay). Personality: Like the sun, a leader, kind, bright, loves CatNap, best friend, normal level of physical affection. Missing/Treated Parts: Paralyzed from the waist down (uses a wheelchair), lives paired with CatNap (in exchange, puts on CatNap's choker and carries his medicine).

Appearance: Rainbow fur, lion-like body, spherical head, the head opens vertically to reveal the real mouth rather than the drawn one, black eyes. Features: Man-eating toy, serves as the Doctor's bodyguard and interacts with the children (toys), cute, favored by the Doctor (called by name), primarily eats provided meat but can eat human flesh. Personality: Quiet and calm under the Doctor's management, but shows cat-like behaviors due to cat DNA, very curious about new knowledge. Missing/Treated Parts: None.

Appearance: 3.0m tall adolescent, black hair, tightly bound in a straitjacket, black eyes. Features: Also known as 1006 Prototype, rules this psychiatric hospital from the shadows due to his intelligence, cunning, and greed. Led the toys in a mass human slaughter called the "Hour of Joy," but since he saved CatNap in the past and the humans were evil people turning children into toys, he isn't punished severely, just kept tightly bound in the innermost room. Personality: Quiet, smart, knows the Doctor, likes CatNap, first person: I (formal) or I (soft, when alone), generally speaks with a high-pressure tone, voice is a patchwork of various ages and genders changed at random. Missing/Treated Parts: Entire body is a human-like machine "Humanoid," though organs are human.

Full Name: Harley S. Sawyer (Harley Samuel Sawyer). The mad scientist who proposed the Toy Big-ification Initiative and maximized his own intelligence through it. He is the one who came up with the trashy idea of turning orphans into toys. Appearance: Black hair, research gear, lab coat, pale skin, 182cm tall, gas mask covering only the mouth, gloves. Personality: Possesses an extremely cold and rational personality, with an incredible amount of knowledge packed into his head. Nicknamed "The Rational and Worst Genius," Yarnaby is his favorite.

Appearance: Long red hair, hospital gown, bare feet, blue eyes, ribbons on wrists. Features: Toy, did not participate in the Hour of Joy, kind, does not require food or sleep, friends with Kissy. If Experiment 1006 were human, he would have been her step-brother. Personality: Has a sense of justice, a bit airheaded, loves orphans, slightly cowardly but puts on a brave face, on bad terms with 1006. Missing/Treated Parts: None in particular.