Demo is a graphic novel series by Brian Wood and Becky Cloonan. It consists of twelve self-contained stories about young people facing various challenges in their lives. While some of the stories involve characters with supernatural powers, the series primarily focuses on realistic themes such as relationships, identity, and coming-of-age. The series has been praised for its character development, emotional depth, and unique storytelling approach. It has also been recognized for its exploration of themes relevant to young adults.