Hei, Yin, and Dr. Sakaki from Darker Than Black HD Wallpaper

Three anime characters are depicted against a gradient gray background. On the left is a young woman with light purple hair and a black strapless top, holding a purse. Next to her is a black cat with a red collar. In the center is a man in a long black coat and mask. On the right is a woman with dark hair wearing glasses and a white lab coat over a dark suit.