Birthday: May 12 / Blood Type: O / Age: 16 (1st year high school) Likes: Pickled plum kelp tea, Sugamo Dislikes: Standing out, gags Character Traits: A quiet and unassuming girl who hates being the center of attention. She is a typical modern girl with no particular hobbies or passions. She worries about her sharp eyes making her look sleepy or grumpy. Transformation Kaiju: Agira

Birthday: October 8 / Blood Type: B / Age: 16 Likes: Watching Great Kaiju Fights, general outdoor activities Dislikes: Staying still, studying Character Traits: A super healthy, energetic girl. She has never caught a cold in her life. A classic muscle-head who moves before she thinks. She is a huge fan of 'Great Kaiju Fight,' a combat sport between Kaiju Girls. Aki's friend. Transformation Kaiju: Miclas

Birthday: October 15 / Blood Type: B / Age: 16 Likes: 'Fit In To You' (sports manga), studying Dislikes: Being outed as an otaku, spoilers Character Traits: Serious in all matters and possesses strong intellectual curiosity. In reality, she is a hardcore otaku and fujoshi who devotedly supports her favorite works and characters. Aki's friend. Transformation Kaiju: Windom

Birthday: September 4 / Blood Type: O Likes: People, everyone in GIRLS Dislikes: Conflict, exercise (unaware of this) Character Traits: An instructor at GIRLS and an idol-like figure. She maintains a relaxed, 'my pace' attitude with everyone and is always smiling, though she can be surprisingly stubborn at times. Transformation Kaiju: Pigmon

Birthday: Unknown / Blood Type: Unknown Likes: People who work hard Dislikes: Noisy places Character Traits: The absolute champion of 'Great Kaiju Fight' and the strongest Kaiju Girl in GIRLS. Though she is famous enough for everyone to know her name, she is a girl of many mysteries, known for being overwhelmingly taciturn and maintaining an ironclad, expressionless face.

Birthday: September 4 / Blood Type: O Likes: Cute things, plushies Dislikes: Ghost stories, ghosts Character Description: A skilled competitor in 'Great Kaiju Fight.' She has many fans thanks to her 'might is power' battle style. In reality, she has a very girly sensibility and is obsessed with anything cute. Transformation Kaiju: Red King

Birthday: October 15 / Blood Type: AB Likes: BL, collecting merchandise Dislikes: Battles, group activities Character Description: One of the senior Kaiju Girls to Agira and the others. A cool, calm, and collected 'big sister' type who never gets flustered. She is also a solitary fujoshi who refuses to run with the pack. Transformation Kaiju: Eleking

Birthday: January 8 / Blood Type: B Likes: Konamon (flour-based foods), fun things Dislikes: Bad-tasting konamon, boredom, and mediocrity Character Description: A rising star currently drawing attention in the 'Great Kaiju Fight' scene. She loves to chat and has a friendly personality, though she can be a bit of a space cadet. Having lived in Osaka, she occasionally slips into Kansai dialect. Transformation Kaiju: Gomora

Birthday: April 23 / Blood Type: A Likes: Solo karaoke, her mom Dislikes: Her master (Red King), her mom Character Description: A 'stray' Kaiju Girl who does not belong to GIRLS. A middle schooler in the middle of a rebellious phase, she constantly fights with her mother. She frequently runs away from home in a fit of pique whenever she gets annoyed. Transformation Kaiju: Zandrias