Wolverine, is a powerful mutant who has a long history of amnesia meaning he has forgotten most of his life. His real name is James Howlett before he went under the alias of Logan before he lost his memory and since then has become known as Wolverine. He is now a member of the X-Men, and a teacher at the Xavier's School For Gifted Youngsters. By the time of the events of X-Men: Days of Future Past, Wolverine has regained most (if not all) of his memory.