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.

David Guymer wrote the Primarchs novel Ferrus Manus: Gorgon of Medusa, and for Warhammer 40,000 The Eye of Medusa, The Voice of Mars and the two The Beast Arises novels Echoes of the Long War and The Last Son of Dorn. For Warhammer Age of Sigmar he wrote the novel Hamilcar: Champion of the Gods, the audio dramas The Beasts of Cartha, Fist of Mork, Fist of Gork, Great Red and Only the Faithful.

He is also the author of the Gotrek & Felix novels Slayer, Kinslayer and City of the Damned and the Gotrek audio drama Realmslayer. He is a freelance writer and occasional scientist based in the East Riding, and was a finalist in the 2014 David Gemmell Awards for his novel Headtaker.