William Gezzio is a comic artist and cartoonist from Montevideo, Uruguay. Born as William Omar Geninazzio in Nueva Palmira, Colonia, he attended the Panamerican School of Art between 1961 and 1963. Gezzio has made illustrations, caricatures, animations, comics and cartoons for various media from Uruguay and Argentina. He made his debut in the opposition newspaper El Día in 1965. He remained with the paper as a political cartoonist until 1983. He was also involved as an illustrator in the children's supplement El Día de los Niños, which was launched in 1966. He created several characters for this supplement, including the little black boy 'Bombón' and the country kid 'Tatucito'.
In 1965 and 1966 he was present in Pilán, the children's supplement of the dailies La Mañana and El Diario, which was named after the popular character played by comedian Eduardo Freda. Gezzio drew a strip about a peasant boy called 'Gauchito'. He was also involved in the creation of the Indian teenager 'Charoná', which was developed by Pilán's art director Sergio Bóffano. Charoná's own magazine was launched by the publisher of El Diario in 1967, for which Gezzio drew covers and a feature about a farmer called 'Campito'.
He later became art director of Patatín y Patatán, which was launched in 1970. He also created 'Humornautas', a cartoon panel with space humor in 1971. In 1971 he also returned to Charoná with the gaucho character 'Santos Cruz'. He then helped to rejuvanate the title character Charoná into the boy that generations of Uruguayan primary school children have grown up with. Gezzio drew many stories, posters and covers for the magazine until Sergio Boffano's death in 2003, although he has returned to the character in later years. Charoná can be considered as one of Uruguay's most iconic comic characters, and had also been adapted into a live action TV show.
Gezzio is furthermore the creator of comic strips like 'La Pensión 64', 'Los Risatómicos', 'Tente y sus amigos', 'Pepe Ñandú', 'Nicolás Parletti' and 'El canilla Libre'. Gezzio has published his work in papers like La Mañana, El diario de la noche, El País, Mundo Color, La República and Ultimas Noticias, as well as the supplements El Escolar (El País) and La Pulga (El Diario). He was also a contributor to Mundo Uruguayo, Al Rojo Vivo, Patatín y Patatán, Colorín Colorado, El Dedo, Guambia, Berp, Tío Taba, La Pipeta, Quimera, Balazo and Estado de Humor. He was additionally present in Argentine publications like Patoruzito and Rico Tipo, as well as the Spanish fanzine Nemo.
In 2006 he succeeded Enrique Ardito as the artist of the adventure strip 'Viviana y Yamandú' in the Montevideo newspaper La República. The comic was canceled in 2012. His cartoons have appeared in Guambia and his own magazine Estado de Humor, and he has illustrated books for publishers like Capitel and Lumen.