Amun was one of the Primordial Gods, created by the Drylon over five billion years ago. His daughter Mut gave birth to Ra's daughters.
He died several million years ago in unknown circumstances.
Reality warping: Amun could manipulate matter and energy at a galactic scale, take any form and size he desired, was completely invulnerable, and could teleport anywhere in the universe instantly. He may even have been able to warp the laws of physics.
- Like other Primordials, he was created by the Drylon. It's not known if he considered the other Primodials as his siblings.
- Beyond The Impossible #237, "Settling": revealed to have died a long time ago