Good Boy is an upcoming South Korean action-comedy series set to premiere on May 31, 2025, on JTBC. The series will also be available for streaming on TVING and Disney+ in South Korea, and on Amazon Prime Video internationally. The show stars Park Bo-gum, Kim So-hyun, Oh Jung-se, Lee Sang-yi, Heo Sung-tae, and Tae Won-seok. It is directed by Shim Na-yeon and written by Lee Dae-il.

Faced with financial struggles, short career spans, injuries, and other challenges, former Olympians become special police officers and form the “Olympic Avengers,” using their unique skills acquired during their time as athletes to fight violent crime.

Main Cast & Characters

• Park Bo-gum as Yoon Dong-ju: A former Olympic gold medalist boxer who becomes a police officer through a special recruitment opportunity after being unfairly expelled from his boxing team.
• Kim So-hyun as Ji Han-na: A shooting prodigy who retires from her sport due to personal struggles and aims to become a police officer like her father.
• Oh Jung-se as Min Joo-young: A diligent civil servant at the Korea Customs Service with hidden ambitions.
• Lee Sang-yi as Kim Jong-hyun: An Olympic silver medalist fencer who joins the police force to reunite with his former girlfriend, Han-na.
• Heo Sung-tae as Ko Man-sik: A former Olympic bronze medalist in wrestling turned team leader in the police force.
• Tae Won-seok as Shin Jae-hong: An Olympic bronze medalist in discus throwing who becomes a valuable asset to the special police team.