The work of the Goiano Siron Franco started from grotesque figures that in themselves were already a form of criticism, intensified in later series like "Césio", on the radioactive accident of 1987. From the decade of 1990, however, its production evolved to something more abstract, like the works "Primeira Página" and "O Círculo", in which the possible figures are interviews and where something is perceived hidden, a message that hides behind symbols.