William King (born 1959), also known as "Bill King," is a British writer of a number of science-fiction and fantasy books, most notably in Games Workshop's (GW) Warhammer and Warhammer 40,000 series, all published by GW's fiction arm Black Library.
King wrote Trollslayer (1999), the first novel for the Black Library label.
His most memorable characters, Gotrek and Felix, have appeared in a series of novels, beginning with Trollslayer, a collection of previously published and new short stories. His next-most-famous character is Ragnar Blackmane, a Space Marine from the Warhammer 40,000 game setting universe (although the character was already in existence in the game and background material, King took him and expanded his history in the novel series).
In 2010, he signed a three-book deal with Black Library that will focus on elven brothers Tyrion and Teclis.
Prior to moving to the Czech Republic, King spent a number of years as a designer for GW, contributing to their game universes (where much of his fiction is also set). He has also written a tetralogy of books featuring the Death's Angels which are available in the Czech Republic, Spain and Germany.
He married his long-time girlfriend, Radka, on 24 September 2005, and lives in Prague with his family.
King's latest work has been Illidan: World of Warcraft for Blizzard Entertainment, released in March 2016.