Ra
The supreme sun god was represented as a man with the head of a hawk, crowned with a solar disk and the sacred serpent. However, in the underworld through which he passes each night, he is depicted as ram-headed.
Each day Ra traveled across the sky in the form of the sun, riding in his solar boat, and each night he journeyed through the underworld where he defeated the allies of chaos. He was reborn each morning in the form of the sunrise. His influence on the other gods was so strong that he subsumed many of their identities. Thus Amun became Amun-Ra, Montu became Montu-Ra and Horus became Ra-Horakhty. Pharoah Akenaten’s god, the Aten, was another form of Ra, the solar disk.