Rob Liefeld is an American comic book writer, illustrator, and publisher. A prominent artist in the 1990s.
In the early 1990s, self-taught artist Liefeld became prominent due to his work on Marvel Comics' The New Mutants and later X-Force. In 1992, he and several other popular Marvel illustrators left the company to found Image Comics, which started a wave of comic books owned by their creators rather than by publishers. The first book published by Image Comics was Rob Liefeld's Youngblood #1.
His creations Deadpool, Cable, Youngblood and X-Force helped change the comic book landscape and remain staples of both Marvel and Image comics.