Age of Apocalypse

Published in 1995-1996 by Marvel Comics, the 'Age of Apocalypse' was a major crossover event that took place across several X-Men-related titles. The storyline was created by a team of writers including Scott Lobdell, Mark Waid, and Fabian Nicieza, with artists such as Joe Madureira, Andy Kubert, and Chris Bachalo contributing to the artwork. The story arc is set in an alternate reality where Charles Xavier is killed before founding the X-Men, leading to a dystopian world ruled by the mutant Apocalypse. Key characters include Magneto, who leads the X-Men in this reality, and villains like Apocalypse and his Horsemen. The event spanned over 40 issues across different series, including 'X-Men: Alpha', 'X-Men: Omega', 'Astonishing X-Men', and 'Amazing X-Men'. Major events include the struggle to restore the original timeline, the sacrifice of several characters, and the exploration of a world without Xavier's dream. The storyline had a significant impact on the X-Men universe, introducing new characters and altering existing ones, and it remains a fan-favorite for its bold storytelling and unique setting. The 'Age of Apocalypse' is considered an essential read for X-Men fans and has been collected in multiple trade paperbacks.