Grevane

Grevane is a human warlock and necromancer. He is one of the Heirs of Kemmler. He appeared in Dead Beat.

Description
Thomas Raith: "It's a hell of a risk."

Harry Dresden: "Oh, no. a risk. Well, we wouldn't want that, now, would we?"

Raith: "Nobody likes a wiseass, Harry."

Grevane was a big man with a long face, and pale, leathery skin, "as if he'd spent years in the blowing desert wind and sand without seeing the sun". His hair was grey and he wore sideburns. A scar put a permanent sneer to his lip. He had "narrow, yellow teeth and a crocodile's smile." He had a deep, resonant voice and spoke with a thick British accent. He corrects Dresden's grammar, and speaks in Latin when asking Dresden if he plans to murder him "in cruor gelidus" (in cold blood), indicating some level of intelligence.

Grevane was Kemmler's first student. His partner is Liver Spots, later revealed as Quintus Cassius.

Biography
In Dead Beat he sought and found both Die Lied der Erlking and The Word of Kemmler. He was one of Kemmler's followers who attempted to become a minor demigod using the Darkhallow.

He was killed by Warden Carlos Ramirez after setting up the Darkhallow ritual, but before he was able to draw in its power.

"A Fistful of Warlocks"
In "A Fistful of Warlocks", Grevane is a member of the Thule Society, and an apprentice of Heinrich Kemmler, fighting Anastasia Luccio in Dodge City. Hiw magical powers are strong enough for Luccio to believe he's a White Council wizard. He survives the battle and Luccio hunts for the two dark wizards.

Dead Beat
In Dead Beat, he and Quintus Cassius attempt to abduct Waldo Butters with a bunch of zombies. At that time he has the copy of Die Lied der Erlking. Harry Dresden happens to be there and helped Butters escape.

Later, Grevane attacks Harry Dresden's apartment with an army of zombies and this time captures Butters. Harry negotiates a trade to get Butters back. That's when Corpsetaker arrives with an army of specters and they face off allowing Harry, Thomas Raith, Butters and Mouse to escape.

He shows up at the Field Museum of Natural History just as Harry finds the The Word of Kemmler and takes it from Harry and leaves him alone with Quintus Cassius. On Halloween night, he had started the Darkhallow when Harry and Carlos Ramirez arrive to stop him. Carlos slices Greveane's throat with his sword and executes him with his gun.

Note
It was Grevane's zombie attack on Harry Dresden's apartment door that left it dented and bent. Dresden later attempted to fix the door, but it never quite worked right.