Cha Joo Wan, born Baek Seon U, is a South Korean actor and model under Hello World Entertainment (헬로우월드엔터테인먼트). He graduated from Howon High School Affiliated High School and later obtained a bachelor's degree in Sports Guidance from Catholic Kwandong University. Before debuting, he used to play soccer through high school but suffered several injuries that hindered his performance. He was offered a modeling job at Musinsa and decided to focus on that instead of sports. He made his acting debut in 2021 with a role in "School 2021" (학교 2021).