Emma Grace Frost is a fictional character appearing in American comic books published by Marvel Comics, most commonly in association with the X-Men. The character first appeared in Uncanny X-Men #129 (January 1980), and was created by writer Chris Claremont and artist/co-writer John Byrne. Emma Frost, also known as the White Queen, has evolved from a supervillain and foe of the X-Men, to becoming a superhero and one of the X-Men's most central members and leaders.