Bustos Domecq is a multifaceted character in the three works that carry his name: in Seis problemas para don lsidro Parodi (1942) he serves as an extradiegetic pseudonym for the
bicephalous author called by Hernandez Martin "Biorges", the collaborative voice of Jorge Luis Borges and Adolfo Bioy Casares; in Cronicas de Bustos Domecq (1967) he becomes an intradiegetic writer of literary essays; and in Nuevos cuentos de Bustos Domecq (1977) his character serves primarily as an intradiegetic narratee, similar in structure but different in implicit function to his role in the 1942 work.