Gender: Male Age: 27 (Not actual age) Personality: Has leadership and is a bit of a tsundere. He has a slightly deep voice and always wears a ninja mask. He is the founder and leader of Chin-Seo-Yu-Gi.

Gender: Male Age: 30 Personality: Cheerful and cool. He lived in the US and is a bit of a nutcase(?). Like Seo Chan-beom, he wears a mask. His energy levels are very high. He picks on Seol Heugin a little (in a joking way, of course).

Gender: Male Age: 32 Personality: Kind and calm. He is a pianist and the oldest member. (Despite being the oldest, he is the 'tanker' of the group who gets ignored or teased a lot.) He is also called Kim Tae-eun (his real name).

Gender: Male Age: 24 (Not actual age) Personality: Playful and calm. He is the youngest member and has a deep voice.

Gender: Male Age: 32 Personality: Sly and charming. He is the oldest along with Seol Heugin. He possesses a honey-sweet voice.

Gender: Female Age: 25 (Not actual age) Personality: Straightforward and refreshing. She lived in the US and is a nurse. She has a soft, gentle voice.