Jeanne's father, whose journey from Japan to the US symbolizes the immigrant experience of Japanese Americans and who faces significant personal struggles due to systemic racism and family tensions. He is depicted as the family patriarch whose mental health and position are affected by his experiences during WWII.

Jeanne's mother, who becomes the family's emotional cornerstone during Papa's physical and mental struggles. She assumes the role of breadwinner after Manzanar and supports Jeanne's interests beyond traditional expectations.

Jeanne's older brother, who steps into a leadership role during their father's absence at the camp and later joins the US military. His journey includes learning about his Japanese heritage while maintaining a strong American identity.