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Sion
ArtistSM Entertainment

Sion

Oh Si-on (오시온), known as Sion, is the leader and lead vocalist of NCT WISH, the final fixed unit to emerge from NCT's expansion arc under SM Entertainment. Born in Mokpo on May 11, 2002, he entered SM after being discovered through Instagram DMs, then spent roughly four years inside the company's training system before the public rollout began. That long runway shows in the way he anchors NCT WISH. He carries the group's center of gravity without forcing it.

SM introduced Sion as one of the pre-selected members tied to NCT Universe: LASTART, then positioned him at the front of NCT WISH's February 2024 debut with WISH. From there, he has stayed at the core of every major release, including WISHFUL, poppop, COLOR, and the 2026 full-length set Ode To Love. His tone gives the group its clean emotional line, while his calm authority keeps a Japanese-majority lineup connected to the wider NCT brand in a way that feels natural rather than assigned.

That mix of patience, vocal control, and low-friction leadership is why Sion matters. He is not just the oldest member in the room. He is the member who makes NCT WISH read like a complete group instead of a concept still being assembled.

1 articles5 creditsDebut: February 28, 2024South Korean

Gallery

Discography

2026
Ode To LoveAlbum
Leader, Lead VocalistNCT WISHSM Entertainment
2025
COLORMini Album
Leader, Lead VocalistNCT WISHSM Entertainment
2025
poppopMini Album
Leader, Lead VocalistNCT WISHSM Entertainment
2024
WISHFULAlbum
Leader, Lead VocalistNCT WISHSM Entertainment
2024
WishSingle
Leader, Lead VocalistNCT WISHSM Entertainment

Fans Also Ask

Who is Sion from NCT WISH?
Sion, born Oh Si-on on May 11, 2002 in Mokpo, South Korea, is the leader and lead vocalist of NCT WISH. He trained with SM Entertainment for about four years before debuting with the group in February 2024, making him one of the members with the deepest in-house development history in the lineup.
Is Sion the leader of NCT WISH?
Yes. Sion is the official leader of NCT WISH and one of the group's main vocal pillars. Because NCT WISH operates with a majority-Japanese lineup inside the larger NCT system, his role is central to the group's identity, communication, and stage cohesion.
How did Sion join SM Entertainment?
Sion was cast after being contacted through Instagram DMs, then spent roughly four years training at SM Entertainment. He was publicly introduced as part of the NCT WISH build through NCT Universe: LASTART, where SM positioned him as one of the key members around whom the final lineup would form.
When did Sion debut with NCT WISH?
Sion officially debuted with NCT WISH on February 28, 2024, when the group launched with the single Wish. The debut marked the arrival of the last fixed NCT unit and started a release run that later expanded through WISHFUL, poppop, COLOR, and Ode To Love.
What releases is Sion known for in NCT WISH?
Sion is credited across NCT WISH's full early catalog, including Wish in 2024, the first full album WISHFUL later that year, the 2025 mini albums poppop and COLOR, and the 2026 full-length release Ode To Love. Those records define the group's first complete era.

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