The X-Men
Of course, each individual X-Men has their own unique stories, but together the team's origin tale is a classic. As mutants, they were all born with their abilities rather than imbued with them by science, magic or aliens. Consequently, many of these people face mistrust and bigotry from the general population who view them as freaks of nature. However, despite their persecution, they still use their powers to protect the innocent. Brought together by Charles Xavier, the X-Men not only combat threats ranging from fanatical humans to fellow mutants, but their overall mission is to fight for the rights of their fellow mutants and usher in a world of acceptance and peace. So even though their overall story is based in a superhero world, it's memorable because their goals are similar to what many of us want to achieve in real life.