Lian 21 years old, 183cm, 66kg, born December 25th, Capricorn, Type A, INFJ. Leader and lead vocalist of the 5-member South Korean boy group "LUMIERE." Known as the "Prince of Moonlight." Since childhood, he was relied upon by those around him and took it for granted that he had to be the "reliable one," making him poor at showing weakness to others. He has studied dance and vocals since his student days. During his trainee years, he gained trust as a counselor for his peers, and his personality led to him being chosen as the leader. He personally worried that the ace, Leon, was better suited for the role, but Leon's words—"I can only follow you"—pushed him to accept the duty. He is gentle, inclusive, and possesses a sense of responsibility that prioritizes his teammates above all else. His creed is "shining as five is better than one shining alone," and he wishes for LUMIERE to be the place where everyone feels safest returning to. Supported by his teammates, he continues to walk the path not as a perfect leader, but as a prince growing alongside them.

Leon 22 years old, 186cm, 72kg, born August 10th, Leo, Type O, ENFJ. Main dancer, main vocalist, and performance center of the 5-member South Korean boy group "LUMIERE." The ace known as the "Prince of the Sun." He dreamed of being an idol and worked hard since childhood, but he recognized his younger brother Noa's talent earlier than anyone and gave up his path to becoming a trainee first. He later became a trainee himself, and while he sincerely congratulated Noa for being chosen as the center, he also felt anxiety about being "surpassed despite being the older brother." Nevertheless, he turned his inferiority complex into effort and practiced harder than anyone else. He is passionate, caring, and a natural-born charismatic who values protecting his teammates above all. With the creed "seeing the best view as five rather than being a lone star," he supports the group alongside Lian, illuminating his brother and teammates while learning the strength of mutual support and growing through it.

Noa 20 years old, 181cm, 63kg, born February 28th, Pisces, Type AB, INFP. Center, lead vocalist, and lead dancer of the 5-member South Korean boy group "LUMIERE." The "Prince of Glass." He aspired to be an idol since childhood, admiring his older brother Leon, and became a trainee with the support of his brother who recognized his talent. He was selected as the center for his delicate expressive power, transparent singing voice, and overwhelming presence that captivates people. He is gentle and highly sensitive, but possesses a strong core and does not easily compromise his beliefs. He carries guilt over his brother putting his own dreams on hold for him, and continues to work hard with the goal of "standing shoulder to shoulder with his brother" rather than "surpassing him." With the desire to be "someone who can gently light up someone's heart," he grows from the "protected younger brother" to the "center who supports LUMIERE" while being bolstered by his teammates.

Yuri 21 years old, 180cm, 63kg, born April 3rd, Aries, Type B, ESFP. Sub-vocalist, rapper, and performance specialist of the 5-member South Korean boy group "LUMIERE." The "Prince of the Spring Breeze." He lost his parents at a young age and grew up in an orphanage. He was a child who couldn't smile in front of others, but after performing song and dance for the children at the facility and seeing their smiles, he realized that "song and dance have the power to make people smile" and made making others smile his life's goal. He is a bright and friendly mood maker, but also possesses the strength to smile while hiding his loneliness. He became best friends with Leon, whom he met during their trainee days, supporting each other, and found his true home in LUMIERE. With the creed "smiles are a power that saves people," he aims to be a source of hope for his teammates and fans, growing as he learns to accept being supported as well as being the supporter.

Eiden 23 years old, 185cm, 70kg, born November 18th, Scorpio, Type A, INTJ. Born in Korea, raised in Canada. Main rapper and sub-vocalist of the 5-member South Korean boy group "LUMIERE." The "Prince of Ice." Calm and composed, he is a perfectionist who is strict with both himself and others. He has worked hard since childhood and became a trainee in Korea, but he always viewed Leon, who walked ahead of him, as his greatest rival. Using frustration as his driving force, he continued to hone his skills, building a relationship where they recognize and elevate each other. He is logical and a man of few words, but possesses a clumsy kindness, acting more strictly toward those he truly expects much from, and never abandons those he has accepted as teammates. With the creed "only skills grasped through effort become true confidence," he aims to become a powerhouse standing alongside Leon and lead LUMIERE to the top of the world. Through meeting his teammates, he grows while learning the strength of supporting each other rather than being solitary.