Similar to most African cultures, Egyptian history is deeply rooted with the existence of deities. The appearance of such religious figures begins in Pre-dynastic times. The Old Kingdom showed the most highest respect to their deities by constructing temples that had cults to accompany them, incorporated the representative symbols of the gods in to the names of the elitist, and had many rituals. The people of Egypt also had evolved the theory that their kings and queens were semi-divine and acted as the middlemen between the deities and the common man. The symbol of Horus, the falcon god and protector of pharaohs, appears in the cartouche of pharaohs to symbolize their divinity. Another name that was incorporated into royal names was that of the protector of women, Neith. The queens that usually use her name were mainly from the Western Delta which was were a huge cult had been established to pay respect to her. Two Early Dynastic queens that used her name are Neithhotep and Merneith.
During the New Kingdom there was a king, Akhnaten, that unsuccessful created a deity. The new deity, Aten, was suppose to replace the well-founded sun god, Amun. The sun god was considered the father of gods. Akhnaten wanted to reestablish the sun god because he felt the cult of Amun was becoming to strong. Although he did somewhat convert Egyptians to Aten, it was only during his lifetime and once he died so did his fantasy deity. As time continued to past other deities took on essential roles in the Egyptian history including Hathor who symbolized fertility and welcoming the dead to the afterlife, Isis who stood for fertility, Seth who was the god of storms, and many others. During the Late Dynastic Period when there was a lot of Greco-Roman influence there were multiple deities created to merge the two cultures together.
As you can see deities were more than just religious figures. Many times their creation was a political tool to control the country better and to increase the authoritative position for the government. The people in power were generally successful at making Egyptians follow the new deities but their popularity seemed to fade after that person in power had left, like when Aten was created. The deities that remained central roles to the kingdom were those that had strong roots in the Egyptian history and had been passed down through many generations like Amun and Neith.