Patricia "Patsy" Walker is a superhero appearing in American comic books published by Marvel Comics. Created by Stuart Little and Ruth Atkinson, Patsy Walker first appeared in Miss America Magazine #2 (November 1944), published by Marvel precursor Timely Comics, and became Hellcat in The Avengers #144 (February 1976). She premiered as the star of a teen romantic-comedy series, and was later integrated into Marvel superhero franchises such as the Avengers and the Defenders as Hellcat.
Following her reintroduction as Hellcat, the character has been described as one of Marvel's most notable and powerful female heroes.