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, published by Marvel precursor Timely Comics, and became Hellcat in The Avengers #144. 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.

Marvel Comics is an American comic book publisher and the property of The Walt Disney Company since December 31, 2009, and a subsidiary of Disney Publishing Worldwide since March 2023. Marvel was founded in 1939 by Martin Goodman as Timely Comics, and by 1951 had generally become known as Atlas Comics. The Marvel era began in August 1961 with the launch of The Fantastic Four and other superhero titles created by Stan Lee, Jack Kirby, Steve Ditko, and many others. The Marvel brand, which had been used over the years and decades, was solidified as the company's primary brand.