JTBC has unveiled striking new posters for their upcoming series 'Good Boy,' offering fans a sneak peek at the determined cast. This comic action show follows the journey of five former national athletes who transition to the police force through a unique recruitment initiative. Each character brings their unique strengths to the team as they confront a world rife with corruption, deceit, and injustice.

Park Bo Gum portrays Yoon Dong Joo, a former boxing champion who starts afresh after a series of setbacks. Despite facing challenges, he carries himself with pride and unwavering determination. His poster, featuring blood and sweat, depicts the intense battles he has endured. Park described Yoon Dong Joo as a character motivated by justice and resilience in any circumstance.

Kim So Hyun plays Ji Han Na, an ex-Olympic shooting champion now serving as a Special Forces corporal. Known for her precision and cool demeanor, she embodies experience and inner strength. Kim explained that Ji Han Na remains level-headed, driven by passion rather than emotion, making calculated decisions in every situation.

Lee Sang Yi embodies Kim Jong Hyun, a fencing silver medalist turned Special Forces inspector, noted for his sharp intellect and investigative skills. Dressed sharply and exuding precision, his character is compared to a pair of flawed glasses that he cherishes. Despite imperfections, Kim Jong Hyun remains resolute in his path.

Heo Sung Tae takes on the role of Go Man Sik, a former wrestler now leading the Special Forces team. His calm leadership style emphasizes patience over brute force. Heo described Go Man Sik as a paternal figure who prioritizes his team and loved ones. His quiet strength unites the group seamlessly.

Tae Won Suk brings warmth to Shin Jae Hong, a former discus thrower who evolves from strength-focused beliefs to a more balanced approach in his duties and personal life. Tae likened him to a steadfast pine tree, always loyal and dependable. His ability to rise to challenges underscores his character's development.

Oh Jung Se portrays Min Joo Young, a customs officer with a hidden dark side, distinct from the others in the group. His eerie poster suggests a sinister presence, contrasting the sports-themed visuals of the main characters. Oh Jung Se aimed to portray a concealed menace among society, urging viewers to confront evil.

'Good Boy' is scheduled to debut on May 31 at 10:40 p.m. KST, offering a blend of action, emotion, and character depth for an engaging viewing experience.