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On May 1, 2025, JTBC dropped the first teaser for its forthcoming action-comedy series Good Boy, starring Park Bo-gum in the lead. The plot centers on former national sports champions recruited into law enforcement as part of a unique program.
They swap their athletic honors for official roles in the police force. In the preview, Park Bo-gum appears as Yoon Dong-joo, once a standout boxer for the national team, now stepping into a new position as an officer.
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The footage shows him inside the ring, where he showcases his abilities in the arena. Appearing alongside him are Lee Sang-yi, Kim So-hyun, Heo Sung-tae, Tae Won-seok, and Oh Jung-se. Viewers are thrilled to witness this ensemble of talent together on screen.
"We're excited to meet the avengers team!!," an Instagram user commented.
Before the trailer, JTBC officially announced the launch date for Good Boy, accompanied by a promotional image highlighting lead Park Bo-gum on April 29.
The latest visual displays the actor's face smeared with blood, his fist wrapped and clenched, neck muscles tensed, and eyes locked forward, portraying both physical strain and sharp concentration. Fans can't wait to see Park Bo-gum again after his recent role in Netflix's When Life Gives You Tangerines.
"Good year for Bo Gum missers, we did well," a fan said.
"Bogum as chaotic boxer turned police officer will be so delicious to watch," another X user mentioned.
"All my 👀 are focus to rookie 👮🏻♂️ Yoon DongJu in #GOODBOY," another person shared.
Admirers showed interest in the cast, especially the pairing of Park Bo-gum with Lee Sang-yi and Kim So-hyun. Many are looking forward to their on-screen dynamics and potential chemistry.
"Park Bogum and Lee Sangyi in one drama, sign me up! 🔥🔥🔥," a netizen said.
"Bogum & sohyun in a drama together can't wait," another fan said.
"I'm very excited for the dopamine 💗 this DongNa CP will give us 👮🥊👮♀️🔫," another fan added.
More about Lee Sang-yi, Kim So-hyun, Heo Sung-tae, Tae Won-seok, and Oh Jung-se's roles in Good Boy
In Good Boy, Lee Sang-yi plays Kim Jong-hyun. He is a former Olympic fencing silver medalist who joins the police academy, hoping it’ll lead him back to his ex, Han-na. Heo Sung-tae plays Go Man-sik, a former Olympic wrestler awarded a bronze medal, now leading the same unit.
Tae Won-seok acts as Shin Jae-hong, South Korea’s first discus thrower to earn an Olympic bronze. Kim So-hyun plays Ji Han-na. She was once widely known for her Olympic gold in shooting and her public image, but stepped down amid controversy. Han-na then applies to special recruitment, aiming to follow in her father's footsteps as a cop.
Oh Jung-se takes on the role of Min Joo-young, a mid-level customs official by profession, whose outward dedication conceals a more sinister persona. While respected during the day, he carries out secret operations under the cover of night.
Good Boy is set to premiere on JTBC on May 31, 2025, at 10:40 pm KST, airing every Saturday and Sunday. International fans can tune in to Prime Video to watch.
