LaChaise clan

The LaChaise clan is a clan of ghouls that work with the Red Court of vampires. They are first mentioned in Summer Knight.

Description
When Billy Borden engaged a female ghoul in a fight, her outward appearance changed, her hands lengthened, talons grew out of her nails, her features were distorted, and she sprouted tusk-like fangs. It's not definite that this assailant is a member of the LaChaise clan.

Summer Knight
In Summer Knight, Harry Dresden and Billy Borden being under attack by mortal gunmen, a female ghoul disguised as an old lady with a shopping basket comes up behind them with a sawed-off shotgun. Harry shoots her in the gut, she takes off in the truck with the gunmen. Harry tells Billy that she's probably from the LaChaise clan since they don't like him very much.