Scott Westerfeld is best known as the author of the Uglies series, a number-one New York Times bestseller, and the Leviathan and Zeroes trilogies, both New York Times bestsellers. His standalone novels include So Yesterday, and Afterworlds.

His other works include the Midnighters trilogy, the Peeps and Risen Empire duologies, and the eponymous first book of the Horizon multi-platform series. His novels have won the Philip K Dick Special Citation, the Aurelius Award (twice), the Victorian Premier's Award, and have been named New York Times Notable Books and Best Books for Young Adults Top Ten Children's Books of the Year.

Scott co-wrote the Shay's Story Uglies-based graphic novels with Devin Grayson. He is also the author of the graphic novel Spill Zone, illustrated by Alex Puvilland. He lives in Sydney and New York.

Alex Puvilland was born in France where he grew up reading his father's comic books. He now lives in Los Angeles with his ridiculously talented wife and two extraordinary children, Leo and Adrien.

He works for Dreamworks Animation, and does comics whenever he has a moment. Alex co-illustrated Prince of Persia and Templar.