Claire Underwood
She is played by Robin Wright. In the first two seasons she is Frank’s sidekick but she does more later on in the show. In the third season she makes trouble for Frank when she criticizes the homophobic laws in Russia. In Season 4, she gets Frank to agree to make her Vice President. In Season 5, she takes over as President of the United States but refuses to pardon Frank. In Season 6, Claire is the protagonist. In it, Frank’s assistant Stamper tries to kill her for betraying Frank but Claire kills Stamper.