The pseudonym of Jean Ignace Isidore Gérard, a French caricaturist, born at Nancy; his fame was first established by the "Metamorphoses du Jour," a series of satirical sketches representing men with animal faces characteristic of them; his subsequent work embraced political cartoons and illustrations for "Gulliver's Travels," "Don Quixote," "Robinson Crusoe," La Fontaine's "Fables," etc. (1803-1847).