Born March 20, 2008. At 190.5cm, he is the tallest member of the team. He is a vocal member with a tone reminiscent of a pop star and excellent live performance skills. He became a hot topic for his monthly evaluation videos during his trainee days and even showcased his rapping in the debut song 'FaSHioN'. His unique appearance, a harmony of a strong bone structure and gentle eyes, gives off a model-like vibe with his great proportions, and blonde hair suits him well. He is known for his bright, active, yet very gentle and kind personality. He likes acai bowls, matcha, mint chocolate, and Hawaiian pizza, and especially loves puppies and summer. He is fluent in Korean and English and also works on music using FL Studio. His role model is BTS's RM, and he believes that expressing oneself with confidence is what defines 'coolness'.

Born October 14, 2005. A representative member of the team's dance line, he possesses outstanding skills and choreography production abilities. He leads the members' choreography and has participated in creating it himself, as well as contributing to the choreography for TXT and ILLIT. He shows a sophisticated image with sharp, Western-style features and a clear jawline, and his facial expressions on stage are excellent. He has a persistent personality that sees problems through to the end, but he also has a surprising charm with lots of aegyo for the fans. He likes pudding, chocolate, milk, and ramen snacks, and enjoys animation and ice hockey. He is multilingual, speaking five languages: Korean, English, Chinese, Thai, and Japanese.

Born January 3, 2008. Despite a short trainee period, he is a performance member who shows solid fundamentals and an excellent sense of rhythm. With his pure and cute puppy-like appearance, small face, and clear skin, he creates a boyish atmosphere and is cited as a member with a huge gap between his on-stage and off-stage charms. He likes ramen and spicy food, especially Yeol Ramen and smoked duck. He likes black and white and has recently preferred casual and vintage styles. He likes Daniel Caesar and has a calm side, enjoying reading and Yoga Nidra. Although he is afraid of water, he has a high interest in music and fashion, and despite being the last to join the team, he shows a strong presence.

Born January 13, 2009. He is a member who stands out with a unique, trendy vocal tone and clean dance lines. He has a high bridge of the nose, distinct features, and sharp, drowsy eyes, with a surprising charm of dimples appearing when he smiles. He has a kind personality, being sensible, meticulous, and enjoying new challenges, and he tends to actively contribute ideas. He likes acai bowls, kaya toast, rainbow sherbet, Yeol Ramen, Shin Ramyun, and Buldak Bokkeum-myeon, and also enjoys coffee and green tea. He likes winter and watching movies, and has active hobbies such as basketball, skateboarding, and cycling. He likes psychedelic rock and R&B, and he started his trainee life after being cast at Lotte World when he was young.

Born February 14, 2009. The youngest member of the team, he is a main vocalist and dancer with powerful yet flexible and rhythmic dance lines and a clear, boyish vocal tone. He is considered the team's representative visual, standing out with the gap between his mature expressionless face and his bright smile. He is playful and laughs a lot, but he also has a gentle and kind personality that values manners, earning him the nickname 'Soondoongi' (gentle soul). He was a swimmer since childhood, specializing in backstroke, and it is said that the flexibility and physical strength built through swimming helped his dancing. He likes acai bowls, salted caramel ice cream, Odongtong-myeon, and sweet potato pizza, but cannot eat spicy food well. He is fluent in Korean, English, and Japanese, and likes puppies and Kuromi.