The main characters include Wolverine, Professor X, and Magneto. Wolverine is sent back in time, Professor X has his own powers and leadership in the X - Men, and Magneto has his magnetic powers and his own views on mutant - human relations.
There are several important characters in this story. Wolverine is a central figure as he is the one sent back in time. His healing factor and his combat skills play a big role. Professor X, with his telepathic abilities, is key in leading the X - Men and also in understanding the complex relationships between mutants. Magneto, with his control over magnetism, has his own ideology about mutants being superior. Additionally, Mystique also has a significant part as her actions in the past can influence the future greatly.