The White House chief of staff known for her intelligence and competence; she is a trusted advisor to President Duncan and plays a significant role in the plot's unfolding.

Vice President alongside President Duncan, depicted as intelligent and competent, who provides support and navigates political intrigue when Duncan is absent.

A young, brilliant mathematician from Ukraine who becomes a key ally to President Duncan, helping to address a major cybersecurity threat.

The Speaker of the House who opposes President Duncan's actions and plays a significant role in political conflicts within the narrative.

The leader of the Sons of Jihad, portraying a cunning antagonist responsible for orchestrating a major threat within the plot.

An elite assassin with a pragmatic approach to her work, motivated by her personal history and future aspirations.