A werewolf that is 200 years old. When he was young his village was pack as savaged by vampires. His father in attempted to save them was viciously murdered by the vampires, and his mother who desperately tried to save him and his sister put them in the sacred soul tree. When he and his sister awoke they found themselves within a different world and a different mother. Their mother was not the sweet, kind person that they once knew, she was strict, mean and too many other negative things. Ivory and Greyson grew up to be weapons, items for River to spy on Astrid. Greyson hated it, he became sour and overly protective. But he never gave up on family and he always did what his mom asked until his mom took it too far and let Ivory be killed. He blew a fuse. (he was a little kid in the first book, he grew up by the time second/third book came around)