Greyback/Bill
"Avada Kedavra!" he shouted with relish. A woman dropped mid cast and fell to the ground. Greyback loved the smell of the battle. Blood and sweat filled the air and he happily send a Cruciatus Curse at a nearby man. As the man's screams filled the air, the werewolf laughed.
His wand whipped around and blocked an oncoming hex before sending a slashing hex of his own. One of the legs of the witch who had sent the hex burst open, he saw the color of her hair change from brown to fiery red as she attempted to send another hex at him. Again, he blocked the hex easily before sending another slashing hex aiming it for her neck.
Blood erupted from her neck and she fell.
Turning his attention back to the battle, he saw another man running towards the man Fenrir had just crucio-ed. Wand out, he said, "Avada Kedavra!" The man who had been running with a limp dropped dead.
"Crucio!" he said with a chuckle, enjoying the screams of the other man. Merlin, I love killing!