Showdown

Former police officer who quits after a fatal incident, haunted by guilt. He works as a janitor and quietly mentors Ken, trying to shield him from violence. He is driven by a desire to protect others and regain his sense of duty, even as his past lingers. His journey moves from guilt to a renewed commitment to justice.

New high school student who moves with his mother from Kansas. He starts off awkward but grows into a determined fighter under Billy’s guidance. He endures bullying from Tom and Rob, learns discipline through training, and develops a relationship with Julie. His arc centers on resilience and personal growth.

Ken's love interest who defuses Tom's aggression and becomes a confidante. She and Ken navigate the pressures of high school drama and Tom's possessiveness, ultimately supporting Ken’s transformation. Her presence motivates Ken to stand up for himself and his future.

The high school bully who bullies Ken and clashes with Billy. His aggression escalates, affecting Julie and the broader social dynamic. He represents the toxic social force that Ken must confront and overcome.

Ken's friend who warns him about Tom and eventually helps involve the police. He supports Ken's actions and plays a key role in exposing the dojo’s illegal activity. His loyalty helps bridge Ken’s classroom life with the real-world fight against crime.

Lee's henchwoman who attracts Ken to the dojo and participates in the dojo's illicit operations. She embodies manipulation and the seductive pull of the illegal fighting world. Her actions deepen the danger surrounding the youths and complicate Billy’s mission.

The ruthless dojo master who presides over illegal fights and menacingly enforces discipline. He threatens Tom and oversees violence as sport and profit. Billy’s undercover pursuit of Lee pits true justice against organized criminal exploitation.