Multiple choice Who was known as the god of the underworld? Poseidon Aphrodite Hades Hera Reveal answer Fill a bubble to check yourself C Correct answer Explanation Hades is the ancient Greek god of the underworld, ruling over the realm of the dead. Poseidon is the god of the sea, Aphrodite is the goddess of love and beauty, and Hera is the queen of the gods. Thus, Hades is the correct answer.