Final answer:
Hades is the Greek god of the underworld in mythology, ruling a domain separate from his brothers Zeus, the king of gods, and Poseidon, the god of the sea. The Greek pantheon consists of gods with human-like qualities who influenced various aspects of Greek life.
Step-by-step explanation:
The Greek god of the underworld is Hades. Among the well-known Olympian gods, Hades is the brother of Zeus, who rules the sky, and Poseidon, who governs the seas. These deities are part of the Greek pantheon, which includes a collection of gods and goddesses such as Hera, Athena, Hermes, Apollo, Artemis, Dionysos, Aphrodite, and many more. The gods lived on Mt. Olympus and were revered by the Greeks who sought their intervention in various aspects of life.
Hades, portrayed as wielding control over the dead and presiding over the afterlife, plays a vital role in Greek mythology. In contrast, Death is not a god but an abstract concept or personification of the end of life. The Greeks imagined their gods with human qualities and forms, using these myths to explain natural occurrences and historical events.