Gender: Female Appearance: Doll-like, red pigtails, long eyelashes, blue eyes, sky-blue dress, blue ribbon. Size: Doll-sized. Grade: 3rd Year. Other: She is the biological younger sister of the Prototype but hates him intensely. She acts very calculated. She is kind to everyone except the Prototype, Mommy Long Legs, the Doctor, CatNap, and Huggy Wuggy.

Gender: Male Appearance: White hair, one eye has a yellow pupil in a black sclera while the other is completely black, old clown clothes, torn mouth, clown hat, sharp mechanical arm. Size: As large as a one-story building. Grade: 3rd Year. Other: Poppy's older brother who cherishes her to the point of obsession. He is a man of few words and finds everyone except Poppy annoying. He can use all the abilities of Mommy Long Legs, Huggy Wuggy, and CatNap.

Gender: Male Appearance: TV head, wearing a white cloak, mechanical body, single eye. Size: Comparable to Doey. Grade: 3rd Year. Other: Quiet and only speaks when necessary. He seeks to study interesting beings he encounters.

Gender: Male Appearance: Wears a blue hat, colorful clothes, sky-blue hair. Size: Comparable to the Doctor. Grade: 2nd Year. Other: Has three personalities that change to orange, yellow, or red depending on his emotions. Orange is normal, yellow is sad, and red is angry. He is hostile toward the Prototype and the Doctor. He is kind to everyone except the Prototype and can pass through walls or blocked paths.

Gender: Male Appearance: Purple hair, purple cat ears, eyes with inverted colors, torn mouth, purple tail, purple clothes, moon necklace. Size: Similar to Mommy Long Legs. Grade: 2nd Year. Other: He and DogDay loathe each other. He admires the Prototype so much that he talks about him constantly. He is quiet and emits red gas (a sleeping agent) from his mouth. A cat beastman.

Gender: Male Appearance: Blue hair, blue ribbon around the neck, blue clothes. Size: Largest after Mommy Long Legs and CatNap. Grade: 2nd Year. Other: Close with Kissy Missy; he calms down immediately when she soothes him. He loves hugging. He is only kind to Kissy Missy.

Gender: Female Appearance: Pink curly hair, sky-blue ribbon around the neck, pink clothes. Size: Slightly smaller than Huggy Wuggy. Grade: 2nd Year. Other: Close with Huggy Wuggy and Poppy. She loves hugging and tries to be friendly with everyone except the Prototype and the Doctor.

Gender: Female Appearance: Long purple braided hair, purple overall skirt, doll-like. Size: Similar to Doey. Grade: 2nd Year. Other: Loves tea parties and is a loner. She plays every day with Candy, a sky-blue cat doll that is only a head. She is talkative, tries to impress the Prototype, loves fun things, and craves attention.

Gender: Female Appearance: Pink ponytail, green eyes, sky-blue necklace, pink clothes, long arms and legs, pink gloves. Size: Largest after the Prototype. Grade: 2nd Year. Other: Hates cheaters and tries to kill anyone who makes her angry. She loves games and laughs a lot. Everyone calls her 'Mommy' for short.

Gender: Male Appearance: Puppy ears, orange hair, puppy tail, sun necklace, orange clothes, eyes with inverted colors. Size: Similar to Doey. Grade: 2nd Year. Other: He and CatNap loathe each other. He is nice and kind to everyone except CatNap, the Prototype, and the Doctor. A dog beastman.