Professor X
Mr. Charles Xavier AKA Professor X the leader of the X men, he was a rich kid he noticed his powers when he saw into the mind of a man we ignored the choice of saving his father who then went on to marry his mother. that was the first time he knew he had powers.
He wanted an Earth that saw a human and Mutant living together, he was a firm believer in this and pushed himself to try and achieve it. He has a dark side that has been visited in a few versions but we are more likely to see him be the good guy we know.
He was very close friends with Erik Magnus AKA Magnet, they fought alongside each and also against each other for many years, they both shared different views when it came to humans and mutants living together.
Charles's sole purpose in life was to create the X-Men and fought for good.