Question: Onew, Jonghyun, Key and Minho had a fifth member of their South Korean boy group that was formed in 2008. This member also began his acting career in 2009 in an MBC comedy. Who is he?
Sentence (from "Onew"): Born in Gwangmyeong, Gyeonggi-do, Onew was discovered at the 2006 S.M. Academy Casting and signed the contract with S.M Entertainment the day after his audition.
Relevant evidence: No