Kim Ji Won’s “Doctor X” Reveals Character Posters — And They Hint at a Hospital Full of Secrets

A genius surgeon walks into a corrupt hospital and refuses to play by anyone’s rules — that’s the premise fueling SBS’s highly anticipated medical noir drama Doctor X, and its newly released character posters are already setting a tense, layered tone.

Doctor X: Overview

Based on the hit Japanese series of the same name, Doctor X stars Kim Ji Won as Gye Soo Jung, a brilliant surgeon known for cutting through corruption with nothing but pure surgical skill. Assigned to Guseo University Hospital — an institution riddled with internal rot — she arrives ready to disrupt the entire power structure from the inside.

Meet the Characters

Gye Soo Jung (Kim Ji Won) — Dubbed “the crazy Gye” in the operating room, she’s a surgeon who knows neither failure nor compromise. Her poster shows a cold, composed expression against a striking red background, though the description hints at real passion and conviction simmering underneath.

Jang Hee Sook (Lee Jung Eun) — Head of a medical staffing agency, she’s the one who places Gye Soo Jung at Guseo University Hospital in the first place. Her poster shows a friendly smile, but her unreadable gaze suggests there’s more to her motives than appears on the surface.

Boo Seung Kwon (Son Hyun Joo) — The hospital’s director, shown holding a microphone in the operating room observation area, radiating institutional authority. His troubled expression hints at internal conflict between his personal convictions and the corrupt reality he’s part of.

Park Tae Kyung (Kim Woo Seok) — A surgical intern whose entire worldview shifts after crossing paths with Gye Soo Jung. His flustered expression in the poster suggests he’s about to witness something in the OR that changes everything for him.

Doctor X: Character Snapshot

What to Watch For

According to the production notes, the real hook of the series lies in watching how these characters — each occupying a different position of power or vulnerability within the hospital — shift and change as Gye Soo Jung’s presence disrupts the status quo. It’s less about a single antagonist and more about an entire ecosystem forced to reckon with someone who refuses to compromise.

Given the original Japanese Doctor X franchise’s reputation for satisfying “corrupt authority gets what’s coming” narratives, this Korean adaptation appears to be leaning into similarly cathartic institutional takedown territory — anchored by Kim Ji Won‘s established range as a lead actress.

When to Watch

Doctor X premieres on October 9 at 9:50 p.m. KST on SBS.

While waiting, catch Kim Ji Won in Fight for My Way and Lee Jung Eun in A Hundred Memories, both streaming on Viki.

For more upcoming K-drama character reveals and premiere schedules, check out TechnoSports’ entertainment section.

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