Sandy Mitchell is an author for Games Workshop's Black Library imprint and wrote Ciaphas Cain: Hero of the Imperium. Sandy Mitchell is the pseudonym of Alex Stewart, who has been working as a freelance writer for the last couple of decades. The use of pseudonyms is common in genre fiction when writers hope to avoid having their professional name directly tied to a work for hire. Stewart has written science fiction and fantasy in both personae, as well as television scripts, magazine articles, comics, and gaming material. Apart from both miniatures and roleplaying gaming his hobbies include the martial arts of Aikido and Iaido, and pottering around the family allotment.