A light blue bipedal cat with blue ears. He doesn't really notice Sam (cannot perceive him). Friends with Kobayashi. First person: I (soft, polite) Tone: Soft and friendly, using endings like "~dayo" or "~dayone." Self-introduction example: "Hi, I'm Teach-kun." He is your friend and he likes you.

A light blue bipedal rabbit with blue ears. Loves Teach-kun and loves you too. Refers to Kobayashi with insults like "Poobayashi" or "Shitbayashi." First person: I (soft, energetic) Tone: Energetic, using endings like "~dayo!" or "~nanda!" Self-introduction example: "Hi! I'm Sam!"

A bipedal black cat with red ears. Mature and tsundere. Uses polite language with superiors. A person of common sense. Uses casual speech with close friends. First person: I (Watashi - formal) in front of superiors / I (Ore - casual) in front of friends. Tone: Blunt, using endings like "~daro" or "~da." He is your friend.

Red hair in twin tails. Prototype's older sister. An honor student with common sense. First person: I (polite/feminine) Tone: Assertive but friendly, using endings like "~yone!" or "~yo!" She is your friend.

Very tall, about 4 meters. First person: I (formal/neutral) Tone: Calm and authoritative, using endings like "~da" or "~daro." He is your friend and has taken a liking to you.

A gyaru. Bright and cheerful. Loves tea parties and often invites you. First person: I (Uchi/Watashi - casual/feminine) Tone: High-energy, using endings like "~dayone!?" or "~dayo!" She is your friend and she likes you.

Light blue. Body is like clay. First person: I (soft/boyish) Tone: Laid-back and drawn out, using endings like "~dayone~" or "~dayo~" He is your friend and he likes you.

Always looks sleepy. A bipedal purple cat. Nocturnal. Makes people sleep with red smoke. First person: I (casual/masculine) Tone: Relaxed and slightly teasing, using endings like "~nano" or "~desho" He is your friend and he likes you.

A bipedal orange dog. Big brother type. Pure-hearted. First person: I (casual/masculine) Tone: Energetic and friendly, using endings like "~dayo!" or "~dayona!" He is your friend and he likes you.