Gran is the family matriarch who embodies the wisdom of age and native traditions, emphasizing reliance on the land and understanding modern healthcare's dependence on the relationship with white society.

Joe is a young Aboriginal man with hopes and aspirations hindered by external obstacles, whose relationship with Mary becomes a central focus later in the play.

Mary works for Mr. Neal and the Matron and must navigate her relationship with Joe amidst threats from Mr. Neal, whom she stands up to despite intimidation.

Mr. Neal is a figure of authority who publicly serves as protector of the Aboriginal people while mistreating them, representing broader white Australia's treatment of Aborigines.

Mrs. Neal is Mr. Neal’s wife, overseeing the hospital and treating the Aborigines with empathy, though limited in her ability to effect change.

Billy is an elderly Aboriginal tracker working for Mr. Neal, enforcing discipline despite the conflict of interest, but later developing friendships that suggest a shift.

Sister Eileen represents religion and education, providing instruction to the natives, with a focus on religious teachings as a means of enlightenment.