Nightcrawler (Kurt Wagner) is a fictional superhero appearing in American comic books published by Marvel Comics, commonly in association with the X-Men. Created by writer Len Wein and artist Dave Cockrum, he debuted in the comic book Giant-Size X-Men #1 (May 1975). Nightcrawler is a member of a fictional subspecies of humanity known as mutants, who are born with superhuman abilities. Nightcrawler possesses superhuman agility, the ability to teleport, and adhesive hands and feet.

For a time, Kitty Pryde and Nightcrawler express some resentment over the X-Men's failing to contact them after their supposed deaths. Following the wedding of Captain Britain and Meggan, Excalibur disbands and Nightcrawler returns to the X-Men with Shadowcat and Colossus. Yet, as soon as they return, they face a group of impostors following Cerebro, in the guise of Professor X.  Wanting to devote more time to priesthood, Nightcrawler shares team leadership with Archangel. However, his work as a priest is retconned to be an illusion; he had, in fact, never attained priesthood. He has also met his half-brothers Nils Styger, alias Abyss, and Kiwi Black. With them, Nightcrawler defeated his father Azazel, who had tried to use him as a pawn in escaping his prison.  Later, Nightcrawler served as the new leader of the Uncanny X-Men team alongside Wolverine, Bishop, Psylocke, Cannonball, and Marvel Girl. In the last mission against the Foursaken, Nightcrawler took Marvel Girl, Psylocke, Bishop, and Cannonball to Central Park. He later helped Storm liberate Africa from her uncle's control.  Afterwards, Professor X recruited him, along with Darwin, Havok, Marvel Girl, Warpath, and Polaris, to participate in a space mission to stop Vulcan from laying waste to the Shi'ar empire. During the battle with Vulcan, Nightcrawler helps get the injured Professor X and Darwin back to their spaceship. While there, trying to save Professor X, Lilandra sent the ship on its way back to Earth, leaving half the team behind.  Kurt is still part of Professor X's team, helping Charles find Magneto before the government does, while the rest of the team search for the Morlocks.

Using a quote from the above article, answer the following question: Why did Excalibur disband?