Hijitus was originally created as a minor character in the comic strip The Adventures of Pi-Pio (Spanish: Las aventuras de Pi-Pío), published in September 1955 in Billiken magazine.
García Ferré was a weekly collaborator at Billiken at the time, and Pio-Pio was the first serial comic strip he created.
In Pio-Pio, Hijitus is depicted as a descendant of pharaohs and one of the inhabitants of Villa Leoncia, the imaginary city in which the adventures of Pi-Pío are set.
The city of Trulalá is ravaged by the evil Professor Neurus, who the incompetent legal system, represented by a "Council of Elders", are unable to stop.
In December 2008 the first box set composed of 5 DVDs was released, a compilation of 53 episodes of the original series, including extras such as trailers, trivia, characters information, wallpapers, music clips and synopses.