Henry Cameron - Roark's role model and mentor who refuses to compromise his individualistic approach to architecture.
Lois Cook - A pseudo-intellectual journalist who claims to be an independent thinker.
Mike Donnigan - One of the working class contractors, he recognizes the quality of Roark's work and becomes his friend.
Dominique Francon - A troubled woman who loves Roark and believes she can save him by tearing him down.
Guy Francon - Owner of the most successful architecture firm in the city, he is locked into maintaining the classic styles though he does recognize Roark's genius.
Catherine Halsey - The scorned woman who becomes bitter and mean spirited after Keating rejects her for Dominique.
Austen Heller - The one newspaper columnist who supports Roark's work.
Peter Keating - He is a social manipulator who rises to the top in spite of a lack of talent that often leads him to...
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