The literary figure renowned for their contributions to Gothic literature is Edgar Allan Poe. His works, characterized by themes of madness, loss, and the macabre, explore the darker aspects of the human psyche. Poe's mastery of suspense and his ability to evoke strong emotional responses have made him a pivotal figure in American literature. Notable works such as "The Tell-Tale Heart" and "The Fall of the House of Usher" exemplify his distinctive style and thematic preoccupations. Poe is also credited with popularizing the short story and significantly influencing later writers in the Gothic and horror genres.