Among Seohyun and John S. Hall who worked with King Missile?
Seohyun Seo Ju-hyun (born June 28, 1991), known professionally as Seohyun, is a South Korean singer and actress. She debuted as a member of girl group Girls' Generation (and later its subgroup TTS) in August 2007, who went on to be one of the best-selling artists in South Korea and one of South Korea's most popular girl groups worldwide. Apart from her group's activities, she has established herself as an actress, notably through her participation in the original and Korean versions of stage musicals including "Moon Embracing the Sun", "Gone with the Wind" and "Mamma Mia". She also starred in the drama "". She debuted as a solo artist with her debut mini album, "Don't Say No", on January 17, 2017, making her the third Girls' Generation member to debut as a solo artist.
Kim Sung-il (general) Kim Sung-il () is a former Chief of Staff of the Republic of Korea Air Force. He was born on August 24, 1948, and attended the Korea Air Force Academy and Korea National Defense University. He served as commander of the 11th Wing and the Aerospace Project Group, and later became the Director of Korea Defense Intelligence Agency, a position traditionally held by Army generals