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. With its compelling premise, well-developed characters, and exploration of gender and society, Y: The Last Man has garnered critical acclaim and a dedicated fanbase.