Karin's 17-year-old brother and an aspiring playwright. He feels neglected by his father and experiences sexual frustration, leading to an incestuous encounter with Karin. His actions trigger the family crisis, but he ultimately finds emotional grounding through his father's wisdom about love, hoping to survive his own slipping grip on reality.
Martin and Minus interact as brothers-in-law, united by their concern for Karin's deteriorating state.
David is Minus's emotionally distant father, whose artistic pursuits neglect his son's need for connection.
Minus is Karin's younger brother, struggling with sexual frustration and a desire for paternal attention.
Explore the full interactive character relationship map of Through a Glass Darkly