Which South Korean reality-documentary show was Oh Jong-hyuk a former cast member of?
Oh Jong-hyuk Oh Jong-hyuk (; born February 16, 1983) is a South Korean singer. He debuted as a member of Click-B in 1999, and made his debut as a solo artist in September 2006 with the album ""Issue"". He was a former cast member in the variety show "Law of the Jungle". In September 2013, T-ara's management Core Contents Media released an official statement confirming that He and Soyeon of T-ara have been dating for the past 3 years. He appeared on MBC King of Mask Singer in 2015 (Episode 35 and 36 with the stage name "Lonely Man Leon").
Mark Tetto Mark Tetto (born March 1, 1980) is an American who lives and performs in South Korea as a television personality and businessman. He is currently a cast member in the variety show "Non Summit" and "Where Is My Friend's Home".