A Shop for Killers — Characters & Cast

Initially to survive the night; evolves into protecting her uncle's allies and taking down Babylon.

Starts as a grieving college student confused by her uncle's reclusive behavior. Thrust into live-fire survival, she recalls Jin-man's training, learns to handle weapons, outsmarts veteran assassins, accepts the responsibilities of Code Green, and emerges in Season 2 as the confident CEO of Murthehelp fighting alongside her uncle.

Shield Ji-an from the mercenary underworld and eradicate Babylon's threat.

A former elite mercenary who turned against Babylon to protect his family. He fakes his death to test Ji-an's capability and flush out hidden traitors, returning in Season 2 to wage an open war against his rival Bale.

Honor-bound loyalty to Jin-man and protective affection for Ji-an.

Saved by Jin-man in the past, she repays her life-debt by acting as Ji-an’s lethal bodyguard during the compound siege. She proves to be an indispensable frontline tactical enforcer across both seasons.

Camaraderie with Jin-man and protecting his young student Ji-an.

Jin-man's former mercenary colleague and a Muay Thai master who taught both Min-hye and Ji-an how to fight. Though appearing eccentric, his deep loyalty brings him back to defend Ji-an during critical moments.

Greed, self-preservation, and fear of Babylon.

Introduced as Ji-an's helpful childhood classmate who helps her navigate Jin-man's computer files. He is revealed to be a covert operative coerced/hired by Babylon to infiltrate Murthehelp and trigger Jin-man's downfall.