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.

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.

Darius Hinks is the author of the Warhammer 40,000 novel Blackstone Fortress and two novels in the Mephiston series, Mephiston: Blood of Sanguinius and Mephiston: Revenant Crusade.

He also wrote the novella Sanctus. For Warhammer, he wrote Warrior Priest, which won the David Gemmell Morning Star Award for best newcomer, as well as the Orion trilogy, Sigvald and several novellas. His work for Age of Sigmar includes Hammers of Sigmar, Warqueen and the forthcoming Gotrek Gurnisson novel Ghoulslayer.

Alec Worley is a well-known comics and science fiction and fantasy author, with numerous publications to his name. He is an avid fan of Warhammer 40,000 and has written many short stories for Black Library including 'Stormseeker’, 'Whispers' and 'Repentia'. He has recently forayed into Black Library Horror with the audio drama Perdition's Flame and his novella The Nothings, featured in the anthology Maledictions. He lives and works in London.

Chris Wraight is the author of the Horus Heresy novels Scars and The Path of Heaven, the Primarchs novels Leman Russ: The Great Wolf and Jaghatai Khan: Warhawk of Chogoris, the novellas Brotherhood of the Storm and Wolf King, and the audio drama The Sigillite.

For Warhammer 40,000 he has written The Lords of Silence, Vaults of Terra: The Carrion Throne, Vaults of Terra: The Hollow Mountain, Watchers of the Throne: The Emperor's Legion, the Space Wolves novels Blood of Asaheim and Stormcaller, and many more.

Additionally, he has many Warhammer novels to his name, including the Warhammer Chronicles novel Master of Dragons, which forms part of the War of Vengeance series. Chris lives and works in Bradford-on-Avon, in south-west England.