Conrado Walter Massaguer was born in Cárdenas. A self-taught artist, he published his works in Yucatan, contributing to magazines like La Campana and La Arcadia, as well as the local newspaper El Diarioi Yucateno. In 1908 he went to Havana, where he became a baseball cartoonist for the newspaper El Mundo. He also contributed to El Figaro, Cuba y América, El Tiempo, El Hogar and Letras. In 1910, he founded the Mercurio advertising agency with Laureano Rodríguez Castells. In 1913, he co-founded Gráfico with his brother, published until 1918.
Later he also published Social in 1916 and Pulgarcito, a children's magazine. The Massaguer brother also edited the weekly magazine Carteles. He lived in New York for a while during the 1920s, where he contributed to Life, The New Yorker, Collier's, Vanity Fair, American Magazine, Red Book, Cosmopolitan, Literary Digest, Sunday World and Town and Country. During this last stages of his life he was a caricaturist for the newspaper Información from 1945 to 1949 and, from that year on, he collaborated with the newspaper El Mundo.