Mr. Vonnegut is a reference to the late American author Kurt Vonnegut, Jr. (1922-2007). He was a prolific writer of novels, short stories, plays, and essays, and is best known for his darkly satirical works such as Slaughterhouse-Five and Cat's Cradle. His writing style was often characterized by its wit, irony, and non-linear narrative structure. He was also an outspoken critic of war and violence, and a passionate advocate for human rights.