Robert Crumb is an American cartoonist and musician, best known for his influential work in the underground comic book movement of the 1960s and 1970s. He created iconic characters such as Fritz the Cat and Mr. Natural, and his art often features social commentary and satire. Crumb's distinctive style combines detailed line work with a raw, expressive quality. Born on August 30, 1943, in Philadelphia, Pennsylvania, Crumb's early influences included comic strips and blues music. He gained fame for his contributions to publications like Zap Comix and Weirdo. Over the years, Crumb has continued to produce art, exploring various themes and mediums.