Zeus

In Greek mythology, Zeus was king of the gods, god of thunder and lightning, and the father of Apollo, a position he won by drawing lots with his brothers Poseidon and Hades. He was married to Hera, but had many affairs, including one with Leto, a mortal woman, which produced Apollo and his twin sister Artemis.

According to Apollo, Zeus was actually a member of a highly sophisticated race of alien beings who considered themselves gods. And, in a certain sense, they were gods: they had the power of life and death, the power to alter themselves and the world around them, and their displeasure was generally fatal. Certainly, the ancient Greeks with whom they interacted while on Earth considered them gods.

According to Henry Janeway Zeus also watched over travelers himself. 

By 2267, when the USS Enterprise (NCC-1701) encountered Apollo, Zeus had gone on, spreading himself thinner and thinner until he was entirely gone. Apollo claimed this was not death, but it seemed clear that those who had departed by this means were beyond returning.