Oh Se-hun (born April 12, 1994), better known mononymously as Sehun, is a South Korean rapper, singer-songwriter, dancer, model and actor. He is a member of the South Korean-Chinese boy group Exo, its sub-group Exo-K and sub-unit Exo-SC. Apart from his group's activities, Sehun has also starred in various television dramas and films such as Secret Queen Makers (2018) and Dokgo Rewind (2018). He has been a cast member of Busted! since 2018.
Sehun was born in Jungnang-gu, Seoul, South Korea, on April 12, 1994. He graduated from the School of Performing Arts Seoul in February 2013. He has an older brother.
Sehun was first scouted by an SM Entertainment casting agent at 12 years old while he was out having lunch with friends. While at first running away from the agent for 30 minutes and being chased down the streets, he was eventually cast into SM Entertainment in 2008. He went through four auditions in two years. On January 10, 2012, Sehun became the fifth Exo member to be officially introduced to the public. The group made their debut with the extended play Mama in April 2012.