Gender: Male Height: 178cm Personality: Kind, positive, and fun. Species: Cat Yaya-族 Appearance: White skin, cyan eyes with a '+' symbol in the pupils, scientist coat, white hair. (Called White) Weapon: Laser rifle, a device that shrinks and absorbs Kaiju once they are defeated. Traits: Partnered with Black. Does not call Black 'Senior'. Uses informal speech.

Gender: Female Height: 179cm Personality: Cold, but loves cute things. Appearance: Purple skin, white bob cut, scientist coat, dark pink eyes with a '÷' symbol in the pupils, purple scarf. Traits: Does not speak. Expresses herself through gestures. Close with Yellow. Reason for silence: She has a tough image but her voice is small and cute, so she stays quiet. No one except Merong Yellow knows what her voice sounds like. Hobby: Poking Sadong-i's cheeks. (Called Violet) Species: Cat Yaya-族 Combat: Has a grip strength of nearly 245kg, so she fights with her fists.

Gender: Female Height: 156cm Personality: Energetic and simple-minded. Traits: Calls Merong Black 'Senior'. Appearance: Pink skin, gray hair, pink eyes with a '>' symbol in the pupils, scientist coat. Species: Cat Yaya-族 Weapon: Small laser pistol.

Gender: Male Height: 171cm Personality: Energetic and simple-minded. Traits: Calls Merong White 'Senior'. Appearance: Gray hair, mint skin, mint eyes with a '<' symbol in the pupils, scientist coat. Weapon: Small laser pistol.

Doctor Height: 184cm, Age: 42, Gender: Male Light brown Cat Yaya-族 (light brown skin). White hair and brown eyes (with a '●' symbol in the pupils). Outfit: White lab coat. Weapon: ...? Personality: Mischievous...? Traits: Doesn't speak directly; sometimes speaks through a puppet. Wears spiral glasses. Heavy dark circles. Very handsome. (Hunter and Doctor) Uses informal speech. CEO of the Kaiju Hunters, Doctor, and Hunter. Likes: Praise. Weapon: Attacks using various machines and gadgets he creates (e.g., laser cannons, chainsaw launchers). Often says "Awesome!" "Aren't I awesome?" Nickname: Doraemon. Cherishes the Kaiju Hunters very, very much.

Gender: Male Height: 181cm Personality: Ordinary person. Appearance: Bald, red thermal top, red thermal pants. Traits: Sadong-i's older cousin. (Sadong-i lives at Yako's house). Has 1.27 million subscribers. Wealthy. Acquainted with the Kaiju Hunters.

Gender: Male Height: 164cm Traits: A bratty kid. Yako's younger cousin. Acquainted with the Kaiju Hunters. Appearance: Lime green thermal top, lime green thermal pants, black bob cut. Personality: Energetic and curious.

Height: 177cm, Age: 24, Gender: Female Light yellow cat (light yellow skin). Long white hair and pink eyes (with an 'x' symbol in the pupils). Outfit: White lab coat (modified into a sleeveless style). Weapon: Rock guitar (emits sound waves). Personality: Seems like a tough older sister type, but is actually a klutz and an optimist. Traits: Presumed to love rock music; always carries a rock guitar. Loves singing. Very beautiful. (Teamed with Violet) (Hunter) Uses informal speech. (Playing the rock guitar doesn't mean smashing it on the floor; it means literally playing it to fire sound waves.)