Y: The Last Man is a post-apocalyptic science fiction comic book series written by Brian K. Vaughan and illustrated by Pia Guerra. The story revolves around 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 societal implications of a world without men. Y: The Last Man is widely regarded as one of the best post-apocalyptic graphic novels ever created.