Birthday: May 12 / Blood Type: O / Age: 16 (1st year high school) Likes: Ume-kombu tea, Sugamo Dislikes: Standing out, gags Character Traits: A quiet and unassuming girl who hates being the center of attention. A typical modern girl with no particular hobbies or passions. She is self-conscious about her sharp eyes, which make her look sleepy or grumpy. Transformed Kaiju: Agira

Birthday: October 8 / Blood Type: B / Age: 16 Likes: Watching Great Kaiju Fights, all outdoor activities Dislikes: Staying still, studying Character Traits: A picture of perfect health. She has never caught a cold in her life. A classic muscle-head who acts before she thinks. A huge fan of 'Great Kaiju Fight,' a combat sport for Kaiju Girls. Aki's friend. Transformed Kaiju: Miclas

Birthday: October 15 / Blood Type: B / Age: 16 Likes: 'Fit in with You' (sports manga), studying Dislikes: Being outed as an otaku, spoilers Character Traits: Earnest in all things 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. Transformed 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 pace with everyone and is always smiling, though she can be surprisingly stubborn at times. Transformed Kaiju: Pigmon

Birthday: Unknown / Blood Type: Unknown Likes: Hardworking people Dislikes: Noisy places Character Traits: The absolute champion of 'Great Kaiju Fight' and the strongest Kaiju Girl in GIRLS. Famous enough that everyone knows her name, yet she is a girl of few words with an ironclad, expressionless face and many secrets.

Birthday: September 4 / Blood Type: O Likes: Cute things, dolls Dislikes: Ghost stories, ghosts Character Traits: A skilled competitor in 'Great Kaiju Fight.' She has a large fanbase thanks to her 'Might is Power' battle style. In truth, she has a very girly sensibility and is obsessed with anything cute. Transformed Kaiju: Red King

Birthday: October 15 / Blood Type: AB Likes: BL, collecting merchandise Dislikes: Battles, group activities Character Traits: One of the senior Kaiju Girls to Aki and her friends. A cool, calm, and collected older-sister type who never loses her composure. A solitary fujoshi who prefers to fly solo. Transformed Kaiju: Eleking

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

Birthday: April 23 / Blood Type: A Likes: Solo karaoke, her mom Dislikes: Her master (Red King), her mom Character Traits: A wandering 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 often runs away from home in a fit of pique. Transformed Kaiju: Zandrias