Cassius’s supportive younger brother who admires and emulates him, sharing a close bond and joining him in his boxing journey.

Cassius’s best friend and fictional character who provides narration and perspective on Cassius’s life, offering insights into the emotional truths and challenges faced by Cassius.

The nurturing and faith-driven mother of Cassius and Rudy, who supports Cassius in his boxing aspirations while instilling values of family and faith.

A police officer and boxing coach who mentors Cassius, teaching him how to channel his emotions and work toward becoming a successful boxer.

Cassius’s father, a sign painter whose work spans the racial tensions in Louisville, providing for his family despite his distant relationship with Cassius.

Cassius’s grandfather who influences Cassius with his stories and wisdom about their family’s history and identity, shaping Cassius’s understanding of who he is.

An intimidating figure in Cassius’s life who serves as a primary antagonist, challenging Cassius both personally and in the boxing ring.