Y: The Last Man is a comic book series written by Brian K. Vaughan and illustrated by Pia Guerra. It follows the story of Yorick Brown, the last surviving human with a Y chromosome, and his pet monkey Ampersand, as they navigate a world where all other males have died. The series explores themes of gender, identity, and the nature of humanity. Y: The Last Man is known for its compelling characters, thought-provoking storytelling, and its exploration of social and political issues.