Not really an "artist" except perhaps in the broadest sense wherein a writer is considered an artist. Jack Kirby and others did the artwork (and some of the writing as well.) It has been suggested over the years, in fact, that he received much more of the credit for the creation of these characters that was due him. Not sure myself, as this may have been sour grapes, but I do love the man's comics (and have several boxes of them gathering dust in my basement).