Brotherhood of Evil Mutants
In the 2000 movie X-Men, Magneto tells the mutant-hating Robert Kelly “My dear Senator, we aren’t here to kill you, we’re here to welcome you to the Brotherhood of Mutants”. Within that movie, Mystique, a naturally blue shape-shifter who is in love with Magneto, Sabretooth, who is strong and has fangs and Toad, a mutant with the powers of a toad.   In the sequel, X2, an X-Man named Pyro who can control fire leaves the X-Men to join Magneto and Mystique and they become the new Brotherhood of Mutants.