The Gods of Rome were avatars of the Gods of Olympus.
Confronted with an emissary of Apokolips in Latium 15,000 years ago, later revealed to be a younger Darkseid, the Gods of Olympus showed themselves to the Roman people and became worshiped by them. They soon learned that they could not handle twice the worshipers, so each they created avatars to do the work for them. Over time, these Gods gained independent spirits and separated themselves from their Greek counterparts.
During the War of the Gods, the Roman deities, manipulated by Circe, invaded Mount Olympus and claimed it for their own. Holding Troia as a hostage and brainwashing Captain Marvel into becoming their champion, the Roman gods battled their Greek counterparts for control of Olympus. However, their old champion, the Son of Vulcan, turned against them and aided the Greek gods.
After their encounter with the Source, the Roman god Jupiter and the Greek god Zeus fused into their singular complete forms. Eventually, the other gods did the same, except for the Roman goddess Diana (not to be confused with her namesake, Wonder Woman.
- This character is an adaptation of Gods of Rome, a character in traditional stories. These include, but may not be limited to religious texts, myth, and/or folk lore. More information on the original can be found at Wikipedia.org.