Roderick Usher is a fictional character from Edgar Allan Poe's short story "The Fall of the House of Usher." He is depicted as a sensitive and reclusive man suffering from acute anxiety and a mysterious illness. Roderick lives in a decaying mansion with his twin sister, Madeline Usher, and is deeply affected by the gloomy atmosphere surrounding him. Throughout the story, Roderick's mental state deteriorates as he becomes increasingly obsessed with his family's tragic history. His connection to the Usher family lineage and the eerie house symbolizes themes of decay and madness, ultimately leading to a dramatic and unsettling conclusion.