The X-Men welcome a surprising addition to their ranks as an ally undergoes a drastic transformation into Leviathan, nearly leading to chaos among the team. The Marvel Universe is renowned for its diverse roster, featuring characters from former villains like Juggernaut to iconic heroes such as Spider-Man and Captain America.
In addition, cosmic beings, including the Shi'ar warrior Hepzibah of the Starjammers, have occasionally allied with the X-Men during critical missions. Leviathan's introduction promises to add depth and excitement to future storylines.