Mithras was the central savior god of Mithraism, a syncretic Hellenistic mystery religion of male initiates that developed in the Eastern Mediterranean in the 2nd and 1st centuries BC and was practiced in the Roman Empire from the 1st century BC to the 5th century AD. Parthian coins and documents bear a double date with a 64 year interval that represents Mithra's ascension to heaven, traditionally given as the equivalent of 208 BC, 64 years after his birth.
a Persian god whose cult and popularity grew in Rome; Mithras was originally worshipped by outsiders of the Roman state - pirates and thieves; however, the military began to participate in his worship and thus it spread throughout the empire; Mithras' cult was a mystery cult with seven different stages of initiation.
Roman god. Mithraism was an Iranian religion practised by the Romans, made an imperial cult under Commodus (180-192).