Eduardo Del Rio, who used the pseudonym Ríus, worked in the trade and industry before he made his debut as a caricaturist in Ja-Ja magazine. Soon, he contributed to several weeklies and dailies, like Diario de la Tarde, Ovaciones, La Mañana, and Ojo. In 1961 he was the first foreign author to publish in the Russian Izvestia of Moscow. His first two comics series were 'Los Supermachos' and 'Los Agachados'. The revolutionary 'Supermachos' series about the mythical town San Garabato, was an example for many political comics that followed. In 'Los Agachados', Ríus continued this line of work, but this time without central characters.