He is bald, mustachioed, envious, arrogant, clumsy and above all, very unlucky, so he is always at the receiving end of the multiple slapstick misfortunes common of the strip.
His wife, Leonor, a housewife and two children, Felipín, a very naughty small boy and Sabihondín, a bald kid with glasses who is always dressed in black and is a great student.
The dog, Atila feels nothing but contempt by his owner Pancracio (the reader knows this via his thought balloons) In the first strips they had a rustic maid, Robustiana, but this character was soon dropped.
[1] One year after the publication of the first strip, Francoist censorship banned the ridiculing of the father figure in juvenile magazines, so Ibáñez had to change the family relationships.
Pancacrio and Leonor changed from husband and wife to brother and sister and the children turned onto nephews.