The protagonist, Anacleto, is a young man with black hair, a characteristic tuft on the bangs, and a long nose.
Anacleto frequently has to carry out missions in deserts or high mountains (which ultimately turn out to have elevators).
Another running gag of the series is that he is frequently chased by a group of sharks when he falls in the sea (or even a river or puddle).
Although his name is not revealed in the comic, he is in every issue giving commands to Anacleto, mostly with stupid purposes such as playing chess or drinking gin.
The comic strip was made into a 2015 Spanish live-action action-comedy film: Anacleto: agente secreto.