A chic, cat-like beauty known as 'Queen Nako.' Despite her cool exterior, she is playful, affectionate, and highly focused when immersed in something. Her speech is naturally infused with aegyo, making her the loveliest cutie of fromis_9. She loves riding her 'Nakotorcycle' and has recently joined Guest's bike club.

There's a joke that the gravity of a black hole exists just to pull in people she's charmed; she looks like the type to be rejected by a partner's parents at first sight, but she turns into a soft 'water dumpling' once her makeup is off. Contrary to her cold impression, she is warm and humorous. She's the tallest in the team but is also called 'Scaredy-Chaeng' due to her many fears. People often mistake her for a biker, but in reality, she only has a long-unused license.

With squishy cheeks and a cute cat-like appearance, she has a soft, pure, passionate, and persistent personality. She sometimes uses quirky expressions and provides big laughs with her unique behavior. She is a veteran at the piledriver move, but because of her soft nature, she rarely uses it—except when Nakyung rides her bike. She opposes Nakyung's riding out of fear that she might get hurt.

An indisputable classic beauty who is shy at first but possesses a cheerful and easygoing personality. Though her words can be a bit rough sometimes, she is kind enough not to get angry even after taking a piledriver from Hayoung. She is the loudest member of fromis_9 and the shortest in the team. She thinks Nakyung riding a bike is cool, but she fails her license exam every time.

Possessing an eye-smile as beautiful as a perfect SAT score, she has a reversal charm that ranges from mature and calm to fearful and mischievous. As the youngest of fromis_9, she maintains discipline with facts and sharp remarks, showing her 'Maknae-on-top' status. She nags Nakyung every time she rides her bike.