High School Return of a Gangster — Characters & Cast

Initially driven to survive inside a teen's body and achieve his own dream of going to college; evolves into a dedicated protector determined to restore justice for Yi-heon.

Evolves from a hardened, uneducated mob leader into a compassionate mentor who uses his physical and mental toughness to save victimized youth and pursue an academic path.

Motivated by a desire to hide his home trauma; evolves into seeking true personal freedom and preserving his deep bond with Deuk-pal/Yi-heon.

Shifts from an emotionally guarded, top-ranking student crushed by domestic abuse into a confident young man who confronts his father and stands up for his friend.

Motivated by unyielding loyalty to Deuk-pal; evolves into helping Deuk-pal build a legitimate, crime-free life.

Starts as a grieving, lost mob lieutenant following Deuk-pal’s death; after discovering his boss's spirit lives inside a teenager, he becomes an indispensable off-campus ally and moves away from crime.

Motivated by peer pressure and a need for dominance; evolves into seeking moral atonement for his past abuses.

Transforms from a cruel, insecure gang leader terrorizing Yi-heon into a contrite individual who accepts responsibility for his actions and sacrifices his own freedom to deliver justice.

Motivated by greed, social status, and securing her own son's sole inheritance.

Operates as the calculating, wealth-driven mistress of Yi-heon’s biological father; works to destroy Yi-heon and his mother until her corporate and personal plots are completely exposed.