Sue is Saroo's adoptive mother, who, along with her husband John, provides a nurturing home in Tasmania. She advocates for adoption reform and believes in strong familial bonds beyond biological ties.

John is Saroo's adoptive father, a businessman who supports his family and defends them from racism. He employs Saroo and Mantosh in his industrial hose business.

Mantosh is Saroo's adoptive brother, who was also adopted by the Brierleys from India. His adoption process was more complicated than Saroo’s, highlighting challenges in international adoption.

Kamla is Saroo's birth mother, who faced hardship and loss after her husband left, raising her children alone in India. She maintains hope that Saroo is alive throughout the years.

Guddu is Saroo's older biological brother, who worked to support their family and accompanied Saroo the night they separated. His efforts to find work often took him away from home.

Kallu is Saroo's second oldest biological brother, who also worked with Guddu and later becomes a factory manager. He experiences significant family loss yet manages to attain stability.

Shekila is Saroo's younger sister, who was cared for by Saroo as a child and grows up to become a schoolteacher. She maintains a close relationship with her mother and later reunites with Saroo.