Boone is the primary antagonist, known for his work in the oil industry and resistance to accepting the environmental damage it causes. He faces a moral reckoning at his deathbed.

A supporting character who encourages Boone to repent for his life choices. He represents the legacy of the Industrial Revolution and its environmental impact.

Secondary antagonists who are Boone's former colleagues from the development of the atomic bomb. They embody a refusal to acknowledge the full consequences of their actions.

Boone’s daughter, who visits him on his deathbed. Her conflicted views about her father’s legacy reflect her struggle with the environmental impact of his work.

Responsible for planting the bomb that kills Jill, despite targeting her husband. His actions inadvertently inspire Jill's elevated state.