Yukio (雪緒) is a superhero appearing in American comic books published by Marvel Comics. She is a female ninja of Japanese origin and a supporting character of the X-Men, particularly associated with Wolverine. Originally conceived of as a love interest of Storm, the characters' relationship was relegated to subtext after Marvel Comics' editor-in-chief Jim Shooter mandated that no same-gender couples could be depicted in comic books during his tenure at the company.