Lawrence D. Lieber is an American comic book writer and artist best known as co-creator of the Marvel Comics superheroes Iron Man, Thor, and Ant-Man. He is also known for his long stint both writing and drawing the Marvel Western Rawhide Kid and for illustrating the newspaper comic strip The Amazing Spider-Man from 1986 to 2018. From 1974 to 1975, he was editor of Atlas/Seaboard Comics. Lieber is the younger brother of the late Marvel Comics writer, editor, and publisher Stan Lee.

Iron Man is a superhero appearing in American comic books published by Marvel Comics. Co-created by writer and editor Stan Lee, developed by scripter Larry Lieber, and designed by artists Don Heck and Jack Kirby, the character first appeared in Tales of Suspense #39 in 1963, and received his own title with Iron Man #1 in 1968. Shortly after his creation, Iron Man was a founding member of a superhero team, the Avengers, with Thor, Ant-Man, the Wasp, and the Hulk. Iron Man stories, individually and with the Avengers, have been published consistently since the character's creation.