In Greek mythology, Hades was the god of the underworld, the realm of the dead. He was one of the three major Olympian gods, along with his brothers Zeus and Poseidon. Hades ruled over the underworld from his palace in the deepest part of the earth. He was often depicted as a gloomy and serious god, and he was feared by both gods and mortals.
The underworld was a dark and gloomy place, where the dead were said to live in eternal darkness. It was divided into different sections, including Tartarus, the deepest and darkest part of the underworld, where the worst sinners were punished; the Fields of Asphodel, where the ordinary dead lived; and Elysium, where the heroes and virtuous people went after death.
Hades was not a popular god among the Greeks, and he was rarely worshipped. However, he was a powerful god, and he played an important role in Greek mythology.