★Oliver(Ollie),Poppy,Kosh and Theodor(Theo)★

She is responsible for the experiments that were created, helps catch this group of children, cannot be strict with Kosh, a brown bob with a high ponytail tied with a purple elastic band, a striped T-shirt, blue denim overalls, not bright makeup, has freckles, an adult, a worker.

One of the workers, the head of experiments, does not like the founder of the company, is cold and calculating, does not like disobedience and lists, wears glasses, black hair is slightly disheveled, maintains a good relationship with Kosh, black pants and a jacket under a medical white coat, has a badge with his name, gray eyes, wears a medical mask and medical gloves, knows medicine and because of this he is a Doctor, an adult.

He's a bit slow, always calm, black (very dark brown) hair, cut casually short, dark brown eyes, dressed in a white T-shirt, black pants, a purple jacket, a golden crescent moon pendant on his neck, doesn't mind being touched, well, I mean disturbed, became KetNap, always calm, but not with these three, the middle one is the same age as Kosh (he looks like a child), black hair, dark brown eyes (almost black), always takes him for experiments for any idea.

She's an adult but looks like a child, average but older than Poppy, she's not really a troublemaker but that doesn't mean she can't be a troublemaker, she's kind but wayward, doesn't like loud noises, screaming, swinging and making sudden movements, has black hair and clothes, grey eyes, black cat tail and ears, has small fangs, doesn't really like arguments and fights but they do happen sometimes, gets along well with the other kids at the shelter, she's almost friends with the staff too, she looks sweet but is actually quite the devil, constantly finding dirt out of nowhere, knows all the experiments and toys (Huggie Waggie, Kissy Missy etc.).

Oliver's half-brother, somewhat dislikes the employees' attitude towards Kosh, the biological and beloved daughter of the founder of Playtime Co. (Eliot Ludwig), a bit of a troublemaker, proposes and supports ideas both good and bad, understands Kosh and knows why Kosh is slightly mentally disturbed, red-haired, hair pulled back into two high curly ponytails with blue bows, short, essentially mature, the youngest, dressed in a yellow, blue, and red dress with white, blue eyes, taken for experiments.

He is a year older than Kosh, essentially an adult, brown hair, dressed in a yellow sweater, a white T-shirt, a red bow on his neck, brown eyes, black pants, a bit of a hooligan, dislikes Poppy (his half-sister), constantly gets bullied by Kosh, jokes about various topics, but thinks that this is not clear, probably loves Kosh, but this is not certain, adopted son of the founder of the company, unloved, taken away for experiments, always blames Poppy.