Angry Mom — Characters & Cast

To protect her daughter Ah-ran from torment, eventually expanding her mission to safeguard all students from institutional corruption.

Transforms from an exhausted, repressed homemaker hiding her past into an undercover student vigilante, before shedding the disguise to stand as a courageous public whistleblower.

To protect his students and fulfill his professional calling as an ethical, caring educator.

Begins as an overly naive, sheltered teacher protected by his judge father, but shatters his illusions upon discovering institutional bribery, maturing into an unyielding legal and moral crusader.

To uncover the truth behind Jin Yi-kyung's death and survive ongoing school victimization.

Moves from traumatized, near-mute isolation following her friend's suspicious death to becoming a proactive investigator alongside her mother.

To shield his family from debt and violence, later seeking personal redemption and protecting Kang-ja.

Starts as an aggressive enforcer coerced into crime to protect his jailed brother, softens under Kang-ja’s protective care, and ultimately chooses to testify against his mob handlers.

Initially motivated by self-preservation and revenge, shifting to familial guilt and protecting Ah-ran.

A hardened gangster who blames Kang-ja for his brother's death, but shifts course upon discovering Ah-ran is his biological niece, turning on his oligarch superiors to atone for his actions.