Sometime before 47 BCE, the man who would become known as the Son of Ra was a farmer whose farm was burned down by unknown attackers; an attack that also led to the death of his family. Thinking that all their neighboring farmers did nothing but watch and stand back, the man took on the moniker Son of Ra. Sometime after, he had created a kind of a cult around himself, its members consisting of bandits who revered Son of Ra as a god, believing in his divinity. They set up multiple camps around the White Desert Oasis; one in the ruins of a temple of the crocodile-god Sobek, where Son of Ra set up a shrine, another at the waterfalls of the lake, and a third further south.
With the groups of bandits in these locations, Son of Ra begun to harass and burn and pillage the villages and farms on the outskirts of Dionysias in 51 BCE.
Sometime in 48 BCE, Son of Ra was incarcerated by the local militia in the Dionysias Caravanserai. The local captain, Kallipos, wanted to execute him, but his superiors forbid this. From his prison, Son of Ra was somehow able to send messages to his followers, ordering them to continue their activities, targeting the Greek farmer, Bion.
- The Son of Ra's words on how the world would burn and how neither the Order nor Bayek could save it is possibly a forewarning of the Second Disaster.
- In one of the letters Son of Ra sent to his followers, he mentioned how the sun "is a rock on fire", revealing that he had access to knowledge not common at said time in history.
- In another letter he signed it as "Sunstroker, Son of Ra".
- There is a suggestion that the Son of Ra was working either with the Crocodile of the Order of the Ancients, or at least with their blessing.
- He is the only character in the franchise to be given a "White Room" or "Memory Corridor" confession upon his death that is unrelated to the main story or DLC main story content.
- 'Son of Ra' is part of the pharaoh Tutankhamun's complete name: Nesu bity (NebkheperuRa) Sa Ra (Tutankhamun), meaning 'King of Upper and Lower Egypt (The lordly manifestations of Ra) Son of Ra (The living image of Amun)'.