Jefferson Vieira Barboza is a visual artist, self-taught model maker, inventor, advertiser, cartoonist, designer, finisher, animator, screenwriter, announcer, and producer (graduated from FEPLAM). For many years, he taught drawing courses in Porto Alegre-RS and participated in local radio and TV programs. In 1996, he was one of the co-organizers of Quadrimania in Porto Alegre, his hometown in Rio Grande do Sul, Brazil!