X-Men hero, sparking speculation about who this never-before-seen character could be. Shrouded in mystery, the reveal raises more questions than it answers, but there are still a few intriguing clues to unpack.

On April 23, 2025, Marvel Comics posted on X, revealing that a new X-Man will debut on May 28, 2025, in the Giant-Size X-Men #1. This new mutant will make their first appearance in a special “Revelations” backup story by Al Ewing and Sara Pichelli.

Knowing that two creator A-listers are behind this character's debut gives fans high hopes that this character will be something truly special, and hope that she’ll become a lasting presence in Marvel’s stories, rather than just a one-shot wonder.

Marvel’s New X-Men Hero Arrives May 28th (& We’re Beyond Excited)

Luciano Vecchio Spoiler Variant for Giant-Size X-Men #1 (2025)

While much about this new mutant remains a mystery, here is what we do know. First and foremost, they are a character who has never before appeared in Marvel’s narratives. This makes them a truly new X-Man, not a previously established character ing the team. Thanks to Luciano Vecchio’s “Spoiler Variant” cover for Giant-Size X-Men #1, fans have also been given a silhouette of the character. Based on her long hair, body type, and clothing, she appears to be female, suggesting that Marvel’s newest mutant is likely a woman. However, even more intriguing than her outline is the text featured on the cover itself.

The variant reads, “In the original Giant-Size X-Men, Professor X recruited new mutants from around the globe. One turned him down. Al Ewing and Sara Pichelli introduce the X-Man that never was.” This teaser is especially exciting because, despite the character being entirely new to Marvel’s continuity, Ewing and Pichelli have cleverly given her a backstory that ties her directly to one of the franchise’s most prominent characters. As a result, the new X-Man will not feel like she is appearing out of nowhere. Instead, her character is already grounded within the legacy of the X-Men.

Here’s What Fans Can Expect From Marvel’s Giant-Size X-Men

Main Cover by Adam Kubert & Laura Martin for Giant-Size X-Men #1 (2025)

While the debut of a new X-Man is definitely one of the most exciting teases for Giant-Size X-Men #1, this 50th anniversary issue of the seminal original also shines a spotlight on Kamala Khan, aka Ms. Marvel. Since discovering that she is a mutant, Kamala has been navigating the balance between her previous life as Ms. Marvel and her new role as a leader within the mutant community. Now, in Giant-Size X-Men #1, after being pulled into the distant past by a villain, "Ms. Marvel will witness the iconic birth of the Uncanny X-Men and their first encounter with Krakoa from an all-new, all-different perspective." Hence, this X-Men issue is filled to the brim with exciting developments.

Giant-Size X-Men #1 is available May 28, 2025, from Marvel Comics!

Source: Marvel