C.L. Werner
A weird little Texan dude, Clint writes mostly about Skaven and Chaos, although he has dabbled in Empire related stuff too. He's sort of awesome, from his rattlesnake skull hat to his strange winkle picker shoes. Clint is not Aaron Dembski-Bowden or Andy Smillie. Though he is better than both combined. He is also not Steve Parker.
He wrote the Thanquol and Boneripper spin-off series showing that Thanquol actually does other things in his spare time, rather than get beaten up by a dwarf and a human.
Seems to have a fetish for killing Aeslings in his Chaos novels. We think that his family might have been killed by Aesling Chaos Champions.
He's also the writer of the extremely awesome Brunner the Bounty Hunter books, some of the best in Warhammer Fantasy.
His Witch Hunter series, which chronicle the adventures of Mathias Thulmann (one of the top deadliest Witch Hunters in the Empire) is pretty good too (which sadly never got a conclusion).
Apparently made a boo boo in the third book of War of Vengeance where he created a time paradox by changing the fate of the Dark Elves operators and never let them set foot in Nehekhara, which would prevent Nagash's rise of power. The Warhammer world and the Nehekharan would thank him for that, but not the readers, or those who took the lore and canon conflict seriously.