What does the puzzle below represent, and what four-letter word corresponds to the missing image?
The puzzle represents
the Twelve Olympians
contains a symbol representing one of the Greek gods/goddesses along with the first letter of his or her name.
From left to right
Demeter, goddess of harvest
Poseidon, god of the sea
Athena, goddess of war
Aphrodite, goddess of beauty
Hephaestus, god of blacksmiths
Hera, goddess of marriage
Apollo, god of the sun
Hestia, goddess of the family / Dionysus, god of wine, considered by various authors to be one of the Twelve Olympians
Hermes, the messenger god
Ares, god of war
Artemis, goddess of the moon
The missing image and four letter word would then be
Zeus, King of the gods of Mount Olympus!
@Stiv points out that the title
is a reference to Hellas, Latinization of Ἑλλάς, the Ancient Greek word for Greece.