According to a report updated by MarieClaire Taiwan on October 17, 2026, actor Jang Seung-jo makes a special appearance in the SBS drama 'Doctor X: White Mafia Era,' starring Kim Ji-won, playing Na Dae-il, a newly arrived surgical professor at a university hospital who becomes a rival to Kim Ji-won's character, Gye Soo-jeong.
The report states that Na Dae-il has extensive clinical experience from his long career as a military doctor. After his appearance in episode 3, the hospital director brings him in, causing the plan to formalize Gye Soo-jeong's employment contract to suddenly stall, shifting the power dynamics within the hospital.
Jang Seung-jo previously played the villain Choi Mun-do in 'My Man Is Cupid,' a role noted for its outwardly calm demeanor masking hidden schemes, which left a strong impression on viewers. In this new role as a white-coated professor, his shifts between smiling warmth and cold stares continue to showcase his skill at portraying multifaceted characters.
For general viewers, this kind of workplace power struggle plot resonates with real-world office dynamics: a newcomer disrupting existing arrangements, with polite surfaces hiding individual agendas. Whether Na Dae-il turns out to be friend or foe remains to be revealed as the story unfolds; those interested in following the drama should keep an eye on officially released episodes.
