Lee Seung-gi (Hangul: 이승기; Hanja: 李昇基; born January 13, 1987) is a South Korean singer, actor, host and entertainer. Known as the "Ballad King", Lee has had numerous hit songs such as "Because You're My Woman", "Will You Marry Me", and "Return". He has garnered further recognition as an actor with leading roles in popular dramas such as Brilliant Legacy (2009), My Girlfriend Is a Nine-Tailed Fox (2010), The King 2 Hearts (2012), Gu Family Book (2013), You're All Surrounded (2014), and A Korean Odyssey (2017–2018). He was a member of the first season of weekend variety show 1 Night 2 Days from November 2007 to February 2012, and the host of talk show Strong Heart from October 2009 to April 2012.
Lee's success as a singer, actor and host earned him the title "Triple Threat" entertainer. He was first included in Forbes Korea Power Celebrity list in 2010 placing seventh, subsequently ranking fourth in 2011 and sixth in 2012 and 2015.