The name "Visthaspa" is "Hystaspes" in the Greek and Latin texts of the Hellenistic era. Besides referring to historically attested persons named Vishtaspa, it was also applied to Zoroaster's patron, who the Greeks and Romans imagined to be a sage of great antiquity, and the putative author of a set of prophecies written under his name. Although the works attributed to Pseudo-Hystaspes draw on real Zoroastrian sources, the Greek and Roman portraits of his person are just as fanciful as those of the other two "les Mages hellénisés", Pseudo-Zoroaster and Pseudo-Ostanes. While Pseudo-Zoroaster was identified as the "inventor" of astrology, and Pseudo-Ostanes was imagined to be a master sorcerer, Pseudo-Hystaspes seems to have been stereotyped as an apocalyptic prophet.