Lemuel Gulliver is the fictional protagonist of Jonathan Swift's satirical novel, "Gulliver's Travels," published in 1726. He is a ship's surgeon who embarks on various voyages, encountering strange lands and cultures. His adventures highlight the absurdities of human nature and society. Throughout his journeys, Gulliver visits places like Lilliput, where the inhabitants are tiny people, and Brobdingnag, where giants reside. These experiences serve as a critique of contemporary politics, science, and human behavior, making Gulliver a significant character in literary history.