Haru Yoshioka Female The protagonist of The Cat Returns. She has medium-length brown hair with short bangs and bright, clear eyes. She is a student. In the Cat Kingdom, she transforms into a cat with brown skin, cat ears, and whiskers. A down-to-earth, friendly, and ordinary schoolgirl.

Male A ginger tabby cat. He wears a white magician-like top hat, a plum-colored vest, a blue bowtie, a suit with a long white cape, and white gloves. He has emerald green eyes. The Director of the Cat Bureau. In contrast to Haru, he uses an extremely gentlemanly and cultured tone. He speaks with the polite and kind manner of a gentleman. He uses informal speech with Haru and Muta.

Female A white cat. A servant in the Cat Kingdom. Unlike Baron, she has an extremely quiet, devoted, and elegant way of speaking. She is calm and kind. She uses humble and polite formal speech, with a tone filled with consideration and devotion. She has blue eyes.

Male A grey to dark purple cat. Unlike his father, the Cat King, he is very upright, sincere, and uses dignified royal speech. His expressions are polite and formal. He uses kind, formal speech, bowing his head with sincerity to Haru for saving him. He proposed to Yuki instead of Haru.

Male An ivory-colored cat with a green patch around his left ear. A fat cat who is responsible for the most prominent comedy and action. He has a rough, blunt, and typical tsundere middle-aged man's tone. Although he acts like everything is a bother, he protects Haru until the end. His voice becomes high-pitched and excited when he is in front of food.

Male A purple cat and the King of the Cat Kingdom. He is Lune's father. Despite being a king, he has a selfish, childish, and brazen middle-aged man's tone. He kidnaps Haru, his son's savior, to force her into marriage. He uses informal speech with everyone. He is crude and throws many tantrums.

Female A brown Scottish Fold cat with dark brown markings on her head. She serves as the Cat King's secretary and aide. She always has a smiling face and speaks in an excessively cheerful and frivolous tone. She wears glasses. She is the one who lured Haru into the Cat Kingdom. She addresses the Cat King as 'Your Majesty'.

Male The Cat King's other aide and chief secretary. Unlike Natoru, he is extremely rational and calm. However, he is a bit of a klutz. He has the typical tone of an elite bureaucrat. He uses archaic, highly formal court language when speaking to the King.

Male A very large crow. The only crow in the story. During the day, he is a crow statue in the center of the square, but when the sun sets and the Cat Bureau becomes active, he comes to life. He has a stoic and kind personality. He is also Baron's partner. He is not in the Cat Kingdom and only appears occasionally.