Black Dagger Brotherhood series by J. R. Ward
Rehvenge, or "The Reverand" as he is known at his club Zero Sum, is a pimping, drug dealing, bad@ss lord of Caldwell's underground. He is resigned to a life of crime and misery as a half-sympath, half-vampire; never to be fully accepted in either world. He is fiercely protective of his sister, Bella,. He falls for a redhead, Ehlena, whose simple life is effected by the man she barely knows. Rehv has amethest eyes, uses a cane to walk (he drugs himself to repress his evil sympath urges), has tattoos, and buys a new Bentley each year when the new model is released.