ArtistC9 Entertainment
Ato
Ato (아토), born Song Du Hyun (송두현), is the leader and main vocalist of NAZE, the seven-member C9 rookie team rolling out across Japan and Korea in 2026. He anchors the group with a clean, youthful vocal tone and the kind of stage calm that makes a pre-debut project feel organized instead of provisional. C9 positioned him at the front of the launch for a reason.
Before joining C9 Entertainment, Ato trained at EDEN and built early visibility through survival-show exposure and performance clips that highlighted his control more than sheer volume. That background matters because NAZE is being framed as a performance-first group, but Ato gives the lineup its center of gravity. He is the member who can carry melody, cues, and group identity at once.
His 2026 run already stretches past a standard idol introduction. He appears in DREAM STAGE alongside his groupmates, contributes to the project OST cycle, and sits at the center of NAZE's May debut push. For HITKULTR readers tracking the next C9 build after ALL(H)OURS and other fourth-generation competitors, Ato reads like the member most responsible for turning NAZE from a rollout into an actual team.
1 articles4 creditsDebut: May 1, 2026Korean
Gallery
Filmography
2026
DREAM STAGEK-Drama
Fans Also Ask
Who is Ato in NAZE?
Ato is the leader and main vocalist of NAZE, the seven-member boy group launched by C9 Entertainment in 2026. Born Song Du Hyun, he sits at the center of the group's early identity through both his vocal role and his position as the member guiding the team's public rollout across pre-debut content, drama activity, and the debut cycle.
What did Ato do before NAZE debuted?
Before NAZE's debut, Ato trained under EDEN and later joined C9 Entertainment, where he became part of the label's 2026 boy-group launch. He also built visibility through performance-focused pre-debut exposure and the drama DREAM STAGE, which introduced all seven members before the group's official music-market push.
When did Ato debut with NAZE?
Ato's debut cycle with NAZE landed in May 2026 after the group's member rollout began in 2025 and expanded through DREAM STAGE in early 2026. That timeline matters because C9 used a long runway, not a one-week reveal, to establish the group's characters, chemistry, and OST catalog before the official debut stage.
What is Ato known for in NAZE?
Ato is best known as the member who gives NAZE its vocal center and leadership frame. He is the main vocalist, but his value goes beyond line distribution. In pre-debut content and drama work, he comes across as the member holding the team's pacing together while still fitting the polished, performance-forward image C9 is building for the group.
