Pete Sanderson is a comics historian and critic, who was Marvel’s first official archivist. He is the author of the best-selling X-Men: The Ultimate Guide and co-author of The Marvel Encyclopedia and Marvel Chronicle. Peter was also one of the main writers of the first four versions of The Official Handbook of the Marvel Universe.

Sumerak is an Eisner Award- and Harvey Award-nominated comic book writer and editor. Over the past decade and a half, he has contributed to countless tales of today's most popular characters, including the Avengers, Spider-Man, the Fantastic Four, and the X-Men. His work has been published by Marvel Comics, DC Comics, IDW, and many others.