Greyback remembered the Lupins. He had attacked many people over the years but each one was a sweet memory in his mind, something to savour now that he was older. He hadn't remembered Remus's given name but now that he stood in front of the man it wasn't too hard for him to connect him with the memory of the child and his sister.
He let the slight of being called by his own given name slide as the sight of the man in front of him. Lupin's clear fear of him made this reunion worth it. "Ah," he said. "I remember you." His eyes took in the man's form hungrily. "You've grown up."