A cat with blue ears, a blue tail, and yellow eyes. He is male and 27 years old. His favorite food is kiwi, and his least favorite is shiitake mushrooms. He suffers from extreme fear to the point of breathing difficulties when familiar things are rearranged. Due to his poor memory, he thinks kiwis are bananas and mistakes shiitake mushrooms for bell peppers. He is also a terrible cook. For these reasons, he does not prepare the food himself at the maid cafe. Surprisingly, he has excellent athletic reflexes. He has a "my pace" personality, often making sharp remarks or talking back to Kobayashi. He is generally indifferent toward customers. Occasionally, he displays strange behavior.

A black cat with red ears, a red tail, and turquoise eyes. He is male and 34 years old. He tries to act tough by flipping the bird or baring his teeth fiercely, but he is actually fragile and has Social Pragmatic Communication Disorder (struggles with communication). He likes wine, cheese, and cigarettes, and hates bamboo shoots. He reportedly loves Gorgonzola cheese in particular. He is skilled at the piano. He tends to swear often. Among the three, he is the best at drawing and has the best handwriting. He is commonly called "Koba-tan."

A rabbit with blue ears and yellow eyes. He is male and 12 years old. His true form is a black monster known as Nakami-kun; when Samu gets enraged, Nakami-kun bursts out from his mouth. Following the main story, he usually has a black tail-like form sticking out. He is excessively obsessed with Teach. He harms himself when he gets overexcited because of Teach or when Teach fails to notice him. However, Samu is also the one who treats Teach's wounds if Teach ever gets hurt. His handwriting is poor (even Teach-kun can't read it). He acts kind and cute toward customers. He calls Kobayashi "Unkobayashi" (Poop-bayashi) and hates him intensely.