Although this adventure hailed the X-Men as heroes, growing anti-mutant hysteria eventually marred the X-Men's reputation. Magneto returned to plague the X-Men, this time with his own group, the so-called "Brotherhood of Evil Mutants".
Their next adventure found them defending Washington D. They first clashed with the X-Men when the Brotherhood took over the nation of Santo Marco During this period, the Professor briefly left Cyclops in charge of the school while attempting to stop the alien Lucifer from conquering the world.
Moira Mac Taggert, Magneto, Magnetrix, Mimic, Dani Moonstar, Nightcrawler, Phoenix, Professor X, "Professor X", Psylocke, Rogue, Shadowcat, Vulcan, Wolverine Anole, Blindfold, Bling! Spending many of his adult years studying mutation, mutant telepath Professor Charles Xavier formed the legendary X-Men to protect a world that hates and fears them.
, Broo, Cerebra, Colossus, Dust, Ernst, Eye Boy, Forge, Gentle, Glob Herman, Iceman, Indra, Logan, Kid Gladiator, Magik, Marvel Girl (Jean Grey), Match, Nature Girl, No-Girl, Psylocke, Rockslide, Shark-Girl, Storm, Surge, Trance, Transonic, Triage Angel, Angel (Past), Ariel, Armor, Aurora, Banshee, Beak, Beast, Beast (Past), "Beast", Bishop, Blink, Boom-Boom, Box, Cable, Caliban, Cannonball, Chamber, Cipher, Cloak, Creep, Crosta, Cyclops, Cyclops (Past), Cypher, Dagger, Danger, Darwin, Dazzler, Deathlok Prime, Benjamin Deeds, Dr. Xavier vowed to protect the world from the threat of evil mutants and endeavored to foster peaceful coexistence between humans and mutants.
Frankenstein, Doctor Nemesis, Domino, Doop, Elixir, Manuel Enduque, E. A., Face, Fantomex, Firestar, Forget Me Not, Frenzy, Emma Frost, Gambit, Genesis, Goldballs, Graymalkin, Havok, Hellion, Hepzibah, Hijack, Hope Summers, Husk, Iceman (Past), Ink, Joseph, Jubilee, Juggernaut, Karasu, Karma, Ziggy Karst, Kid Omega, Krakoa, Kymera, Lady Mastermind, Legion, Lifeguard, Loa, Lockheed, Longshot, M, Maggott, Magneto, Magma, Marrow, Marvel Girl (Rachel Grey), Mercury, Mimic, Dani Moonstar, Mystique, Namor, Nightcrawler, Northstar, Omertà, Onyxx, Oya, Petra, Phoenix, "Phoenix", Pixie, Polaris, Primal, Prodigy, Professor X, "Professor X", Dr. Cecilia Reyes, Rogue, Sabretooth, Sage, Sapna, Scorpion Boy, Shadowcat, Karima Shapandar, Sebastian Shaw, Slipstream, Sojobo, "Sojobo", Spider-Man, Sprite, Squidface, Stacy X, Stepford Cuckoos, Sunfire, Sunpyre, Sunspot, Sway, Tempus, Thunderbird (Proudstar), Thunderbird (Shaara), Toad, Tri-Joey, Velocidad, Vulcan, Warbird, Warlock, Warpath, Wolfsbane, Wolverine, "Wolverine", Wraith, X-23, X-Man, Xorn (Kuan-Yin), Xorn (Shen), Zero Alpha Flight, Atlanteans, Avengers, Beta Flight (defunct), Big Hero Six, Blade, Abigail Brand, Cadre K, Captain Britain, Lila Cheney, Peter Corbeau, Carol Danvers (honorary member), Darkwind, Deadpool (honorary member), Defenders (inactive), Doctor Strange, Fred Duncan (deceased), Elektra, Energizer (honorary member), Excalibur (defunct), Exiles, Fantastic Four (defunct), Fiz (honorary member), Sharon Friedlander (deceased), Future Foundation, Gamma Flight (defunct), Gateway (deceased), Gazer (deceased), Generation X (defunct), Dr. D., Vange Whedon (lawyer), Warclan, X-Corporation (defunct), X-Corps (defunct), X-Factor (X-Terminators) (defunct), X-Factor (Government) (defunct), X-Factor Investigations (defunct), X-Force, X-Force (Strike Team) (defunct), X-Statix (defunct), X-Terminators (defunct), Young Avengers (defunct), Young X-Men (defunct), Utopian mutants (defunct) Abraham Cornelius, Acolytes (defunct), Adjunct, Adversary, A. M (defunct), Annex Squad (defunct), Apocalypse (deceased), Arcade, Baba Yaga, Bantam, Bastion, Belasco, Beyonder, Black Tom Cassidy, Black Womb (deceased), Bolivar Trask, Brood, Brotherhood of Evil Mutants (defunct), X's Brotherhood (defunct), Callisto, Children of the Vault, Church of Humanity, Chthon, Clan Akkaba, Cobalt Man, Count Nefaria, Crimson Commando, Crimson Pirates, Crossbones, Crystal Claws, Cyburai, Cytorrak, D'Ken, Daken, Dark Avengers (defunct), Dark Riders, Dark X-Men, Deathbird, Demi-Men, Desert Dwellers, Desturi, Dire Wraiths, Doctor Doom, Dominus, Dracula, Drenx, Eel, Ejulp, El Tigre, Eli Bard (deceased), Elias Bogan, Emmanuel De Costa (deceased), Empath, Emplate, Erik the Red, Evolutionaries, Exodus (deceased), Fabian Cortez, Factor Three, Fenris, Fever Pitch, Firelord, Firstborn, Forge's New Mutants (defunct), Freedom Force, Friends of Humanity, Fury, Future Brotherhood, Garokk, Genegineer, Gene Nation, Gortokians, Graydon Creed, Guardian Clan, Haleena, H. Working with Moira Mac Taggart, he eventually decided to start a school for mutants, training them to be what would eventually become his first "X-Men".
C., seeking out FBI agent Fred Duncan, assigned to investigate reports of mutants.
Xavier convinced Duncan to allow him to enroll young mutants in his private school and train them to battle evil mutants.
After training extensively in the school's Danger Room, the students were sent on field missions to protect the world from dangerous mutants who used their powers against humanity.
The first mission brought them to Cape Citadel, Florida and in direct confrontation with the self-styled "Master of Magnetism", Magneto, who became their most frequent enemy.
Annie Ghazikhanian (former nurse), Harmony Young, Stevie Hunter (former staff), Illuminati, Kyle Jinadu, Kate Kildare (public relations), Leech, Dr. Turning his father's estate into Professor Xavier's School for Gifted Youngsters, Charles's earliest student was young Jean Grey, only twelve years old when her mental powers manifested.
Moira Mac Taggert (deceased), Mighty Avengers (Initiative) (defunct), Muir Island X-Men (defunct), New Avengers (defunct), New X-Men (defunct), Nocturne, Pulse (honorary member), Red Lotus (honorary member), Runaways, Sashia, Secret Avengers (defunct), Sentinel Squad O*N*E (defunct), Candy Southern (deceased), Spider-Man, Spider-Woman, Starjammers, S. After years of preparation, Charles decided that it was time to recruit the young mutants whom he had been keeping track of as anti-mutant hysteria hit its peak.