Hestia is often depicted as a modest young woman. She does not generally show up in any myths besides the story in which her father devours her with her siblings (an event that sparks the war between the Gods and the Titans) and the myth in which she relinquishes her chair as on of the Twelve Olympians.
Hera - Goddess of Family & Marriage
Married to her brother Zeus, king of the gods, Hera is known to punish the women who sleep with her husband. Many men have claimed to have witnessed her on battlefield. She stands for family and marriage as the mother figure within the Greek God "family." One of her symbolic animals is the peacock.
Demeter - Goddess of Agriculture
Often depicted holding wheat or with a cornucopia, Demeter is the Goddess of Grain. When her daughter, Persephone, was stolen by Hades, legend says she would not allow anything to grow until her return. Persephone joined her mother, but because she had eaten pomegranate seeds, was forced to return to the underworld every year. The three month period when Demeter mourns is winter.
Hades - God of the Underworld
Best known for stealing his wife, then tricking her into staying with him, Hades is often thought of as the worst of the gods by many people. However, Hades is also known as the God of Wealth, represented by a cornucopia. He rules the underworld and a symbol of his power is his Helm of Darkness.
Zeus - God of Sky, Order & Fate
King of Mount Olympus, Zeus adopts the role of the father figure in the Greek God family. His symbol is the ever-famous lightning bolt. As the youngest son of Cronus and Rhea, Zeus was responsible for freeing his siblings (Hera, Hestia, Demeter, Hades, and Poseidon) after their father devoured them, beginning the war between the Gods and the Titans.
Poseidon - God of the Sea
Also known as "Earth-Shaker," Poseidon rules the sea. His realm is deep, vast, and filled with sea monsters that threaten those who dare to venture beyond the shore. His symbol of power is his trident and he is credited with the creation of horses.