Nightcrawler

Born in Bavaria to the blue-skinned shapeshifting mutant later known as Mystique, Kurt Wagner was shunned at birth due to his having blue skin, pointed ears, fangs, and a long pointed tail. At the time disguised as the Baroness Wagner, Mystique's true identity was revealed after she gave birth to Kurt, and the pair were chased by an angry mob. Fleeing to the nearby falls, Mystique threw the infant Kurt over the edge and fled. Kurt was saved by his natural father, the enigmatic being known as Azazel, and given into the care of Margali Szardos, a sorceress and gypsy queen.

Margali took baby Kurt to the small Bavarian circus where she worked as a fortune teller as a cover for her activities as a sorceress. Kurt was never legally adopted by anyone, but was raised by all the members of the circus, who had no prejudices against "freaks". Kurt grew up happily in the circus with his two closest friends, Margali's natural children Stefan and Jimaine. Stefan feared that his magical heritage may one day corrupt him, and so he had Kurt promise that if he ever killed without reason for Kurt to stop him. During his formative years Kurt exhibited tremendous natural agility, and quickly became the circus's star acrobat and trapeze artist with audiences assuming that he was simply a normal human dressed in a demon costume. Kurt worked closely with Jimaine, and the pair soon became involved in a romantic relationship.

Years later, the Texas millionaire Amos Jardine, who ran a large circus based in Florida, heard of the circus Kurt worked for and bought it. Jardine intended to move its best acts into his American circus. However, he demanded that Kurt be placed in the circus's freak show, where he was imprisoned against his will and drugged in order to remain complacent. Eventually, a young boy would free Nightcrawler, who would threaten Jardine in order to make him remain a better owner to his circus friends. Nightcrawler then ran away and made his way back to Germany where he discovered that Stefan had gone mad and had brutally slain several members of a lost race of half-human creatures. Kurt found Stefan and fought him, hoping to stop his rampage, but in the course of the struggle Kurt unintentionally broke Stefan's neck. The villagers of the nearby town of Winzeldorf discovered Kurt and assumed him to be a demon who was responsible for the killings. They cornered Kurt in the town and were about to kill him when they were all psionically paralyzed by Professor Xavier, who had come to recruit Kurt into his team of mutant super-heroes known as the X-men.

Kurt agreed to join the group, but before they left for America, he and Xavier went to the Bavarian circus so that Kurt could explain to Margali about Stefan's death. However, Margali was not there, and for years she held Kurt responsible for murdering Stefan. Later, she learned the truth and she and Kurt were reconciled. Kurt was also happily reunited with Jimaine, who had been living in the United States under the assumed name of Amanda Sefton.

After many adventures with the X-Men, including a clash with the Brotherhood of Evil Mutants during which Kurt first met his mother Mystique (although he didn't know it at the time), discovering his ability to be invisible in shadow, traveling through dimensions with Kitty Pryde's dragon Lockheed, and more, Kurt was finally severely wounded during the attack on the underground colony of mutants known as the Morlocks by Riptide, a member of a team of mutant assassins named the Marauders. Kurt was taken to the mutant research facility on Muir Island off the coast of Scotland where he recuperated, but discovered that he could no longer teleport as he originally could, and that teleporting others caused a great strain. After hearing of the apparent "death" of the X-Men in Dallas when the team fought the Adversary, Kurt, Pryde, Rachel Summers, Captain Britain, and Meggan became the founding members of the British super-team Excalibur.