Graham McNeill has written many Horus Heresy novels, including The Crimson King, Vengeful Spirit and his New York Times bestsellers A Thousand Sons and the novella The Reflection Crack'd, which featured in The Primarchs anthology. Graham's Ultramarines series, featuring Captain Uriel Ventris, is now six novels long, and has close links to his Iron Warriors stories, the novel Storm of Iron being a perennial favourite with Black Library fans. He has also written the Forges of Mars trilogy, featuring the Adeptus Mechanicus. For Warhammer, he has written the Warhammer Chronicles trilogy The Legend of Sigmar, the second volume of which won the 2010 David Gemmell Legend Award.

Ben Counter is a lifelong gamer and miniature enthusiast living in the UK, near Portsmouth. He is best known for his series of novels for Games Workshop including the Grey Knights and Soul Drinkers series, and has also written supplements for roleplaying games including Dark Heresy, Warhammer Fantasy Roleplay and World of Darkness. He is a founder of Death Spiral Games, publisher of the RPG Sleeper- Orphans of the Cold War.

Trademarks of his fiction include flights of Moorcockian strangeness, gruesome horror, blood-spattered action scenes and stratospheric body counts. A connoisseur of creative ways to waste time, he is a passionate (and, he likes to point out, award-winning) miniature painter, as well as a regular at his local game shop where he can be found playing miniature wargames, refereeing tournaments of Magic- the Gathering or running RPGs.

Aaron Dembski-Bowden is the author of the Horus Heresy novels The Master of Mankind, Betrayer and The First Heretic, as well as the novella Aurelian and the audio drama Butcher's Nails, for the same series. He has also written the Warhammer 40,000 novel Spear of the Emperor, the popular Night Lords series, the Space Marine Battles book Armageddon, the novels The Talon of Horus and Black Legion, the Grey Knights novel The Emperor’s Gift and numerous short stories. He lives and works in Northern Ireland.

Guy Haley is the author of the Horus Heresy novels Titandeath, Wolfsbane and Pharos, the Primarchs novels Konrad Curze: The Night Haunter, Corax: Lord of Shadows, Perturabo: The Hammer of Olympia, and the Warhammer 40,000 novels Dark Imperium, Dark Imperium: Plague War, The Devastation of Baal, Dante, Baneblade, Shadowsword, Valedor and Death of Integrity.

He has also written Throneworld and The Beheading for The Beast Arises series. His enthusiasm for all things greenskin has also led him to pen the eponymous Warhammer novel Skarsnik, as well as the End Times novel The Rise of the Horned Rat. He has also written stories set in the Age of Sigmar, included in War Storm, Ghal Maraz and Call of Archaon. He lives in Yorkshire with his wife and son.

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.