Thanquol

Grey Seer Thanquol is one of the main antagonists of Gotrek & Felix series and the first skaven to have his own trilogy of novels, featuring his attempts against the enemies of the Skaven, which, amusingly, always end in utter and complete disaster both for the skaven at his command and up to a point, to his enemies, say, every time he is in a plot it's a death sentence for any Skaven surrounding him, with casualties mounting to entire skaven settlements. He's so bad at actually letting the skaven win that a Slann that has Thanquol dead to rights deliberately lets him go and whips up a favorable current to carry him back to the Old World, because he has visions of just how badly Thanquol will screw things over for the skaven.

Yes, that's right, the member of a race that considers skaven worse than daemons is willing to let Thanquol go, as his survival will be that beneficial to the lives of everyone who are enemies to the skaven.

As any of the readers may attest Thanquol is also a source of endless lulz, as he often acts like your classical Saturday-morning cartoon villain, being a funny mixture of Team Rocket, Skeletor and Dr. Robotnik, with more than a little Starscream in the mix.

There have been rumours of him being the main protagonist of The End Times supplement for the Skaven, needless to say everyone is quite happy and expect huge amounts of lols and wats. Especially because the Skaven articles in White Dwarf #49 talk about Thanquol's personal rune, which can be seen at the very center of the new Verminlord Warpseer's Scry-orb.

He also does warpstone dust, as like Snowflame, he is empowered by his use. But then, this is common for all Grey Seers.