Cecil Castellucci is the author of books and graphic novels for young adults including Boy Proof, The Plain Janes, Soupy Leaves Home, The Year of the Beasts, Tin Star, Don't Cosplay With My Heart and the Eisner nominated Odd Duck. In 2015 she co-authored Moving Target: A Princess Leia Adventure. She is currently writing Shade, The Changing Girl, an ongoing comic on Gerard Way's Young Animal imprint at DC Comics.

Her short stories and short comics have been published in Strange Horizons, Tor.com, Womanthology, Star Trek: Waypoint and Vertigo SFX: Slam! She is the Children's Correspondence Coordinator for The Rumpus, a two-time Macdowell Fellow, and the founding YA Editor at the LA Review of Books. She lives in Los Angeles.