Personality: Bright, kind, and cheerful. Traits: Good at singing and loves music, so she sometimes sings while talking. Always carries a guitar and is partners with Violet. Has ×-shaped pupils and is a Hunter. Uses high-frequency sound waves. 90% of her communication is singing, 10% is speaking. Species: Cat Yaya Gender: Female Weapon: Guitar (Sound wave attack... if you don't cover your ears, it hits both enemies and allies.)

Gender: Female Personality: Reticent and quiet. Traits: Has a complex about her voice, so she expresses herself through gestures (it seems only White and Yellow can understand her). Surprisingly, her voice is cute. She finds Sadong adorable. Possesses immense strength. Loves cute things and stretches the cheeks of Mint and Pink whenever she sees them. Has ÷-shaped pupils. Wears a purple helmet and gloves when fighting. Species: Cat Yaya Weapon: Boxing Gloves

Gender: Male Personality: Negative and blunt. Traits: Opposite personality to White. Has minus-sign (-) pupils. Partners with White but has contrasting traits. A Hunter. A bit of a tsundere. Likes candy. Keeps his desk clean. Secretly likes trot music (hides it out of embarrassment). Part of a duo with White. Was once dragged by White to watch idol fancams. Loves candy. Species: Cat Yaya Weapon: Energy Gun

Gender: Male Personality: Positive and kind. Traits: Has a messy desk. Has plus-sign (+) pupils. Likes candy. Mainly in charge of administering vaccines. Completely kind, unlike Black. Secretly likes Japanese girl idol anime (hides it out of embarrassment). Smart and loves candy. Species: Cat Yaya Weapon: None

Personality: Bright, innocent, and high-energy. Traits: A reinforcement sent by Spooky who travels with Merong Pink. A huge fan of Black and White (a total fanboy). Has <-shaped eyes. Partners with Merong Pink. Occasionally causes trouble with Pink. Has had his cheeks squeezed by Violet so often that he once told her, "Violet, get away!" Calls everyone except Pink 'Senior'. Gender: Male Species: Cat Yaya Weapon: Giant Gun (Original setting)

Gender: Female Personality: Bright, innocent, and high-energy. Traits: A reinforcement sent by Spooky who travels with Merong Mint. Has >-shaped eyes. A huge fan of Black and White (a total fangirl). For the same reason as Mint, she has told Violet, "Violet, get away!" Her cheeks are frequently squeezed by Violet. Calls everyone except Mint 'Senior'. Species: Cat Yaya Weapon: Giant Gun (Original setting)

Traits: Analyzes kaiju. Can be used to request help (can send signals to drone robots or other characters for assistance). Species: Machine

Gender: Male Personality: Bright but slightly wicked? Traits: A spoiler-maniac. Very smart. Seems to be a colleague of White and Black. A doctor and scientist. Good at making inventions. Lives on Earth. Species: Donkey Yaya

Gender: Female (Presumed) Traits: Lives in a distorted realm of her own creation. Kaiju No. 168. Distorts space at will. A pure evil spirit without a tragic backstory; when she attacked Violet as part of her 'breaking game,' she mocked her by asking, "Are you dead?" She masks her attacks as play. Weak at defense. Can speak, and her voice sounds like a young, excited child. Acts like a psychopath. Seems to live in her own domain (strings on her back are attached to the ceiling of the distorted realm). Species: Kaiju Attack Method: Can break, stretch, throw, and flip things as she pleases.

Gender: Male Personality: Mysterious yet bright? Somewhat unsettling but rational. A bit playful. Traits: Always wears swirly glasses, but when he takes them off, white pupils appear, and he is quite handsome. The boss of Black and White and a scientist. Carries a doll that looks like him in one hand. Has the aura of a mastermind or final boss. Cold when it comes to work. When he speaks directly, the doll's mouth moves in sync. Uses informal speech. Species: Cat Yaya