Mike Mignola's fascination with ghosts and monsters began at an early age; reading Dracula at age twelve introduced him to Victorian literature and folklore, from which he has never recovered. Starting in 1982 as a bad inker for Marvel Comics, he swiftly evolved into a not-so-bad artist. By the late 1980s, he had begun to develop his own unique graphic style, with mainstream projects like Cosmic Odyssey and Batman: Gotham by Gaslight. In 1994, he published the first Hellboy series through Dark Horse. There are thirteen Hellboy graphic novels (with more on the way), several spin-off titles (B.P.R.D., Lobster Johnson, Abe Sapien, and Sir Edward Grey: Witchfinder), prose books, animated films, and two live-action films starring Ron Perlman. Along the way he worked on Francis Ford Coppola's film Bram Stoker's Dracula (1992), was a production designer for Disney's Atlantis: The Lost Empire (2001), and was the visual consultant to director Guillermo del Toro on Blade II (2002), Hellboy (2004), and Hellboy II: The Golden Army (2008). Mike's books have earned numerous awards and are published in a great many countries. Mike lives in Southern California with his wife, daughter, and cat.

Chris Roberson is the co-creator with artist Michael Allred of iZombie, the basis of the hit CW television series, and the writer of several New York Times best-selling Cinderella miniseries set in the world of Bill Willingham's Fables. He is also the co-creator of Edison Rex with artist Dennis Culver, and the co-writer of Hellboy and the B.P.R.D, Witchfinder, Rise of the Black Flame, and other titles set in the world of Mike Mignola's Hellboy. In addition to his numerous comics projects, Roberson has written more than a dozen novels and three dozen short stories, and has been a finalist for the World Fantasy Award four times; twice a finalist for the John W. Campbell Award for Best New Writer; three times a finalist for the Eisner Awards; and has won the Sidewise Award for Best Alternate History in both the Short Form and Novel categories. He lives with a teenager, two cats, and far too many books in Portland, Oregon.