Kim Yoo-jin, known professionally as Eugene, is a South Korean singer and actress. She is best known as a former member of the girl group S.E.S., which went on to become one of South Korea's best-selling artists. Following the group's disbandment in 2002, she subsequently left SM Entertainment and released two solo studio albums. As an actress, Eugene has participated in various television dramas and movies, making her acting debut in KBS2 Loving You (2002). Her other notable roles include in Save the Last Dance for Me (2004), Wonderful Life (2005), Bread, Love and Dreams (2010), A Hundred Year Legacy (2013), All About My Mom (2015) and The Penthouse: War in Life (2020–2021).