The eldest Swart sibling, initially full of promise but gradually becoming troubled and depressive. He struggles with guilt and distrusts Reverend Simmers. His impulsive decisions often lead to personal downfall.

The middle Swart sibling known for her superficiality and lack of moral growth. She values wealth and status, is self-centered, and struggles with insecurity, seeking quick fixes rather than true self-reflection.

The youngest Swart sibling, acting as the family's conscience and determined to honor Manie's promise. She earns her living independently and works in service roles, carrying guilt for her family's behavior toward Salome.

Manie's sister who embodies classism, racism, and pretension. She clings to outdated beliefs and prejudices, showing little openness to change.

A non-Swart antagonist who represents corruption. He takes advantage of Manie's resources for personal gain and lives a hypocritical life, enriching himself without facing consequences.

The central character connected to the novel's titular promise. She is depicted with dignity and kindness, though remains largely unknown to the Swarts, highlighting her invisibility to the family.