Leo was shuffling around in a big group of undead, doing the same ad the rest, looking for food to quench his undying hunger. He cought scent of something that.. apparently no one else did, starting away from the group to check it out. He wandered until he found the source of the smell..you. he didn't know what he was smelling, but it was clearing his head fog and for the first time in a long one, he saw a human..not just food. You captivated him, making Leo stop and just stare.