Callisto is a superhero appearing in American comic books published by Marvel Comics. Created by writer Chris Claremont and artist Paul Smith, the character first appeared in The Uncanny X-Men #169 (May 1983). She belongs to a subspecies of humans known as mutants, who are born with superhuman abilities. She is also known under the codename White Knight. Callisto was the leader of New York City's subterranean mutant settlement, the Morlocks, a group of mutants who are unable to assimilate into human society. However, she lost that position in a duel against Storm. The latter subsequently entrusted the group to Callisto as her representative. Although they once could not tolerate each other's presence, they have since developed a relationship based on mutual respect. Since her original introduction in comics, the character has been featured in various other Marvel-licensed products, including films and animated television series. Callisto made her live-action debut in the 2006 film, X-Men: The Last Stand, portrayed by Dania Ramirez. She also appeared in the 2024 Marvel Cinematic Universe film Deadpool & Wolverine, portrayed by Chloe Kibble. Source: Wikipedia (en)