Stranger — Characters & Cast

To uphold functional duty, unyielding logic, and objective truth to solve cases without personal investment or emotional bias.

Initially driven purely by functional duty and unyielding logic to solve cases without personal investment. Over two seasons, through his bond with Yeo-jin, he slowly develops subtle emotional awareness, learning to trust others, express warm gestures, and navigate human relationships while remaining incorruptible.

To protect the innocent, value human life, and uphold ethical clarity above bureaucracy and institutional self-preservation.

Starts as an idealistic street detective at Yongsan Police Station who values human life above bureaucracy. In Season 2, after being promoted to the Main Police Agency's Intelligence Bureau, she experiences the agonizing tension between institutional loyalty and her core morals, ultimately choosing truth over career advancement.

To secure career promotion, wealth, and self-preservation through opportunistic political scheming.

Driven entirely by career promotion, wealth, and self-preservation, constantly switching sides between corrupt bosses and Si-mok. In Season 2, his horrific kidnapping and near-death experience force a subtle realization of his vulnerability, providing an ambiguous yet intriguing arc of survival.

To expose high-level corruption and clean a compromised system from within using radical, vigilante methods.

Rises from Chief Prosecutor to Senior Presidential Secretary. Originally an upright prosecutor, he married into the corrupt Hanjo Group conglomerate and realized the legal system was powerless against high-level corruption. He secretively orchestrates a monstrous web of crimes to collect irrefutable evidence against the elite, ultimately sacrificing his life to serve as a catalyst for systemic cleanup.

To protect her corporate empire and preserve her family's legacy through strategic maneuvering.

Starts as Lee Chang-joon's devoted wife who stands in the shadow of her powerful father. Following Chang-joon's death, she steps up in Season 2 to become the Chairperson of Hanjo Group, evolving into a formidable corporate leader willing to use legal loopholes, bribery, and public relations to protect her empire.