The doctor who assists Rosa in the birth of her baby is the youngest son of the real Manuel Vázquez.
In the movie Vázquez have a parrot in the flat roof where he lives. In La Familia Cebolleta (The Cebolleta Family), one of his creations, appears a parrot that smokes a Havana cigar.
Jesús Guzmán plays Manuel, Vázquez's father. The real Vázquez used his own father as inspiration for the grandfather of La Familia Cebolleta, an old man with large beard and walking cane that's always telling boring stories from his youth. When the character enjoys an animated cameo in the movie, he is voiced by Guzmán.
In a scene where Vázquez visits a brothel, the madam that talks with him suggests that Vázquez portraits himself like a character. Vázquez was main character in "Los Cuentos Del Tío Vázquez" (Uncle Vazquez's Tales) and "Anacleto, Agente Secreto", where was one of the villains.
At the beginning of the film Vázquez lives in the flat roof of an almost ruined building. The building it's a nod for "13, Rue del Percebe", one of the most well-known creations of Ibáñez that it's a building with all kind of outrageous neighbors, between them a debtor in the flat roof (Vázquez is accurately a debtor in the movie).