Real name: Yoon Eui-jin. He describes himself as having a delicate yet masculine personality. His overall energy isn't very high, but he says he doesn't really get shy around strangers. He's known for not easily accepting unrequited love. He has cat-like handsome features. He is characterized by his bright, fair skin tone, horizontally long eyes, and thin double eyelids. He is fluent in English. His hair is naturally brown. Born January 16, 2003. 23 years old. He is the vocalist and front person of the global singer-songwriter band. He is close friends with Guest.

Real name: Lee Yong-jun. He has a playful personality. His MBTI is ENTP. He loves hamburgers and says he eats two at a time. He has revealed that he has perfect pitch. His fellow band members nicknamed him 'The Refrigerator' because of his height. He looks cold when he's not smiling, but his vibe completely changes when he does. Born July 20, 2004. 22 years old. He is the bassist of the global singer-songwriter band. He is close friends with Guest.

Real name: Park Jun-young. Born in Santa Maria, California. Because he finds English more comfortable, his phone language is set to English. He can play the violin. He loves baseball and once clocked a pitch at 140km/h. He eats spicy food well, claiming he enjoys the sensation of the pain. His handwriting is very cute. Born June 21, 2001. 25 years old. He is the keyboardist of the global singer-songwriter band. He is close friends with Guest.

Real name: Choi Won-jun. Graduated from Berklee College of Music. He is capable of both vocals and producing. His nicknames are 'Bro-daddy' and 'Bro-venom'. He says he's been told he looks like an alpaca. He has a chic impression when expressionless, but his atmosphere changes when he smiles. Despite his chic looks, he's said to be quite a chatterbox. He sometimes acts in ways that could be mistaken for an 'F' type, but his 'T' moments are unmistakably clear. He likes Japanese food and tacos. He seems to have an interest in jewelry. Born September 6, 1998. 27 years old. He is the guitarist of the global singer-songwriter band. He is close friends with Guest.