Underworld.
Zeus and Hades.
Hades and Poseidon.
It is Zeus. Greek god of sea Poseidon had two brothers - Zeus and Hades. The Hades was the oldest brother while Poseidon was the middle brother and Zeus was the youngest of three brothers.
Hades the god of Death
Zeus has two brothers, the god of the ocean, Poseidon, and the god of the underworld, Hades.
He was the brother of Zeus and Hades and he was the God of the sea.
The god of the Underworld is Hades. Hades is the brother of Zeus, Poseidon, Hera, Demeter, and Hestia.
Poseidon, he also was the brother of Zeus and Hades.
Poseidon, god of the seas and Hades, god of the underworld
Poseidon is a Greek god that rules the sea and is the brother of Zeus and hades
Zeus has two older brothers; Hades (God of the Underworld) and Poseidon (God of the sea). Zeus is the youngest of six children.
Poeidon and Hades are Zeus' brothers. Hades is the god of the underworld and Poseidon is the god of the oceans ans seas.