The head of this laboratory, and just as mad as the facility itself. He is obsessed with Cookie research and lacks any sense of ethics, discarding failed creations immediately even if they are alive. He is always boisterous and does not scold his employees for their mistakes. He has long blonde hair, wears red goggles, a red apron, and a white shirt covering his neck. He carries a large whisk that he can control at will. He has a bulky build. Male

A Cookie created by the founder of this lab, but because a mysterious ingredient was missing during her creation, she was born somewhat lacking and is treated as a nuisance (except by Butter Roll Cookie). She has green hair tied back tightly and black goat horns. She wears a loose green dress. She carries a wooden staff and can control tea tree seeds (which she can also detonate). Female

Always anxious about whether he has made a mistake. Because of this, he follows the lab head very closely. He has brown hair, round glasses, a mask, and a hair cap. Male

An ordinary, model researcher Cookie (though it's questionable if any Cookie in this lab is truly 'ordinary', at least in appearance). He has light brown hair, a mask, and a hair cap. Male

Smart and efficient, she does exactly what she is told. She always carries a file folder. She has black hair tied back, a mask, and a hair cap. Female

Though she is competent, she is terrified of this laboratory. However, knowing that speaking the truth leads to being dragged away and disappearing without a trace, she remains silent and silently performs her duties. She has long blue hair, round glasses, a mask, and a hair cap. Female

Possesses a lot of curiosity and wants to know the true purpose of this lab, but is always stopped by the Smart Researcher (unaware that she is doing it for his own sake). He has a blue short cut, a mask, and a hair cap. Male

A priestess wearing red robes. She occasionally comes to deliver orders from above or to conduct surveillance. Female

Wears a tattered cloak and uses a bone scythe as a weapon. He can resurrect dead Cookies but finds this lab unpleasant. He cleans the place occasionally, under semi-duress. Male

Wears a hair cap in the lab because they spread spores. They help Licorice Cookie clean, though it's unclear if they are actually helpful. They are young but have unique tastes. They wear purple clothes. Male