Jonghyeong

Kim Jong-hyeong (, born April 13, 2002), better known mononymously as Jonghyeong, is a South Korean singer and musical actor. He is the leader of the South Korean boy band DKZ and a member of its sub-unit Nine to Six. He starred in musical productions such as Equal, Dracula, and The Secret Garden.

Early life and education
Kim Jong-hyeong was born on April 13, 2002, in Gumi, North Gyeongsang, South Korea. Jonghyeong enjoyed watching music shows when he was young which inspired him to become an idol. Before debuting, he was leading a dance club at school and was even elected as the overall vice president during his elementary days. In 2022, he entered Global Cyber University as a Broadcasting and Entertainment major.

DKZ
Jonghyeong was the fourth member to join his current label and was a trainee for several months. He officially debuted on April 24, 2019, as the youngest member of the quintet boy group, Dongkiz. In an interview, Jonghyeong mentioned Dean and Monsta X as artists he look up to the most.

On March 18, 2022, his group rebranded and changed its name to DKZ. Jonghyeong took the role of the group's leader in the absence of their former leader and member, Wondae. In May 2022, he and fellow member, Jaechan, became fixed radio DJs at KBS Cool FM's Station Z.

On May 18, 2023, Dongyo Entertainment announced the formation of Nine to Six, a duo sub-unit consisting of Jonghyeong and Mingyu. They officially debuted on May 31, upon the release of their first single album Good To You.

Solo activities
Jonghyeong started his career in musicals in 2022. He made his theatrical debut in the musical Equal alongside his fellow member Kyoungyoon. It was then followed by the Korean production of Dracula where he was cast as Dracula's friend, Dumitru.

In February 2023, Jonghyeong was announced to be part of the musical The Secret Garden. He also portrayed Polidori, an English writer and physician, in the 2023 South Korean musical Mary Shelley in December. On October 18, 2023, Jonghyeong performed for the Brandon Lee Symphony OST Concert with the Theater Philharmonic Orchestra at the Sejong Center for the Performing Arts.