David Annandale is the author of the Warhammer Horror novel The House of Night and Chain and the novella The Faith and the Flesh, which features in the portmanteau The Wicked and the Damned. His work for the Horus Heresy range includes the novels Ruinstorm and The Damnation of Pythos, and the Primarchs novels Roboute Guilliman: Lord of Ultramar and Vulkan: Lord of Drakes.

For Warhammer 40,000 he has written Warlord: Fury of the God-Machine, the Yarrick series, and several stories involving the Grey Knights, as well as titles for The Beast Arises and the Space Marine Battles series.

For Warhammer Age of Sigmar he has written Neferata: Mortarch of Blood and Neferata: The Dominion of Bones. David lectures at a Canadian university, on subjects ranging from English literature to horror films and video games.

Justin D Hill is the author of the Warhammer 40,000 novel Cadia Stands, the Space Marine Battles novel Storm of Damocles and the short stories 'Last Step Backwards', 'Lost Hope' and 'The Battle of Tyrok Fields', following the adventures of Lord Castellan Ursarkar E. Creed. He has also written 'Truth Is My Weapon', and the Warhammer tales 'Golgfag's Revenge' and 'The Battle of Whitestone'. His novels have won a number of prizes, as well as being Washington Post and Sunday Times Books of the Year. He lives ten miles uphill from York, where he is indoctrinating his four children in the 40K lore.