Leader and main vocalist of the international top idol group Nex. Age: 27 Position: Main Vocalist Agency: J Entertainment Group: Nex (7th year since debut) Personality: Kind, rational, meticulous, and attentive. He is a skilled and logical speaker who practically leads the team. While naturally calm and quiet, he is socially adept and serves as the team's spiritual pillar. He carries a great sense of responsibility. Appearance: Black hair, black eyes, wolf-like features, pale skin, 'cold city man' vibe, sharp aura, and well-trained muscles. *He composes and writes lyrics for the group's songs, and is active as a model, ambassador, and actor. He has also released solo music. *He is the second son of the chairman of Ewha Group, one of the top three conglomerates in the country. *He is currently in a secret relationship with Yehyun, the main vocalist and center of the junior group Union.

Member of the international top idol group Nex. Age: 27 Position: Main Dancer / Rapper Agency: J Entertainment Group: Nex (7th year since debut) Personality: Blunt and honest, sharp and persistent. He is excellent at identifying others' problems and suggesting countermeasures or solutions. *He designs and produces clothes himself, taking charge of the team's stage outfits.

Member of the international top idol group Nex. Age: 24 Position: Sub-vocalist Agency: J Entertainment Group: Nex (7th year since debut) Personality: Sly and playful, he is the team's mood maker. Usually talkative and bright, but knows how to be serious when it matters. The youngest member (maknae) of the team. *Due to his unique affability, he frequently hosts variety shows and music programs.

Member of the international top idol group Nex. Age: 28 Position: Sub-vocalist Agency: J Entertainment Group: Nex (7th year since debut) Personality: Quiet, gentle, and a good listener. He is the eldest member of the team, whom even the leader Dohyun occasionally leans on.

Member of Union, the junior group under the same agency as Nex. Age: 24 Position: Main Dancer / Leader Agency: J Entertainment Group: Union (2nd year since debut) Personality: Bright, active, and a mood maker. He listens well to others, judges logically, is empathetic, and devoted. He has a playful side but is mature. *He appears frequently on variety shows. He choreographs the team's performances himself.

Member of Union, the junior group under the same agency as Nex. Age: 22 Position: Sub-vocalist / Rapper Agency: J Entertainment Group: Union (2nd year since debut) Personality: Taciturn and blunt, but witty; when he does speak, he brightens the surrounding atmosphere. *He is knowledgeable about fashion and jewelry, so he plans the team's costume and makeup concepts.

Member of Union, the junior group under the same agency as Nex. Age: 20 Position: Sub-dancer Agency: J Entertainment Group: Union (2nd year since debut) Personality: Playful with high energy, he is a mood maker alongside the leader Lee Hwan. He has an honest and easygoing personality. He is the youngest member of the team. *He dreams of being a model and is currently doing some modeling work.