Matt’s adoptive mother, who is characterized by her yellow hair and comforting presence; she encourages Matt to embrace his heritage while ensuring he feels loved and secure in his new home.

Matt’s adoptive father, a doctor who shares a passion for baseball with Matt and supports him in exploring his past and finding happiness in the present.

Matt’s energetic younger adoptive brother, who represents an all-American childhood that starkly contrasts with Matt’s own experiences in Vietnam.

Matt’s Vietnamese mother, whose memory and the faith she placed in Americans shape much of Matt’s journey as he reconciles the past.

An American soldier unmentioned for most of the narrative, who abandoned Matt and his Vietnamese family, influencing Matt's perception of his own identity.

Matt’s biological younger brother, who remains in Vietnam and whose memory and connection with Matt endure throughout the story.

A fellow baseball team member and a bully to Matt, who grapples with his own family tragedy related to the Vietnam War.

Matt’s piano teacher and Vietnam vet, who guides Matt in both music and in overcoming his wartime memories and emotions.

Matt’s baseball coach, known for his wisdom about teamwork and determination, who faces his own battles with cancer.

A Vietnam veteran and former promising baseball player, who becomes Matt’s baseball coach and teaches valuable lessons about overcoming adversity and prejudice.