SION

Sion (시온), born Oh Si-on (오시온) on May 11, 2002, is a South Korean singer and dancer from Mokpo, South Jeolla Province, South Korea. He is the leader and eldest member of NCT WISH, a six-member boy group under SM Entertainment and the final sub-unit of NCT.

Sion was discovered by SM Entertainment through social media and subsequently joined the company as a trainee, undergoing approximately four years of training. In June 2023, he was introduced as a member of SMROOKIES alongside fellow NCT WISH member Yushi. Later that year, he appeared on the pre-debut reality competition NCT Universe: LASTART as one of two members already confirmed for the group's debut lineup. Following pre-debut activities under the name NCT NEW TEAM, he officially debuted with NCT WISH on February 21, 2024, during SMTOWN LIVE 2024 SMCU PALACE @TOKYO at Tokyo Dome.