Perhaps Professor X’s most-trusted on the X-Men roster, Dr. Jean Grey certainly took after her mentor with her devotion to the mutant cause. Like Professor X, Dr. Grey has a bleeding heart for mutant rights and treatment. Also not unlike her mentor, Jean Grey is an incredibly powerful telepath. However, Grey has an alter ego buried in her brain: The Dark Phoenix. Ratner’s X-Men: The Last Stand borrowed heavily from Chris Claremont’s “The Dark Phoenix Saga” and featured Jean Grey’s transformation from Xavier’s number one to Magneto’s tool for mutant domination. Janssen’s Jean Grey appeared in all three films of the original trilogy and the most recent Wolverine outing last year.