Ha Seon is a fictional character from the South Korean television series Mr. Queen. He is a lowly chef from the modern era who unexpectedly finds himself in the body of a queen during the Joseon Dynasty. This unique situation leads to comedic and dramatic moments as he navigates royal life while trying to return to his own time. The character of Ha Seon is portrayed by actor Choi Jin-hyuk. His journey explores themes of identity, culture clash, and the challenges of adapting to a vastly different world. The series combines elements of historical drama and comedy, making Ha Seon's story both entertaining and engaging.