Demeter

Demeter (Δήμητρα in Ancient Greek) is the Goddess of the Harvest and Agriculture, who presided over grains, the fertility of the earth, the seasons, and the harvest. Demeter is the middle daughter of the Titans Rhea and Kronos. She's the younger sister of Hestia and Hades, and the elder sister of Hera, Poseidon, and Zeus. With her brother Zeus, she conceived Persephone, and was brokenhearted when she was kidnapped by Hades. Another famous daughter of Demeter is Katie Gardner and Miranda Gardiner. Her Roman counterpart is Ceres. Ceres is where the word cereal came from, which explains why she insists that Percy and Nico (and possibly more demigods) eat more cereal.

History
Demeter was swallowed upon her birth, like all her siblings, and was saved by the craftiness of her mother Rhea and her brother Zeus.

After they won the battle against the Titans, Demeter became the goddess of the Harvest. While Zeus and Poseidon married, she remained single meaning that she would be a virgin and a young maiden, although she wasn't planning on remaining chaste her whole existence.

Though her brother Zeus was married to Hera, Demeter had a relationship with him that resulted in a daughter, Persephone. Though Zeus and she did not continue the affair, Demeter was very happy. She had a beautiful daughter all to herself. Persephone grew up without want, very close to her mother. They both have control over the Earth and plants, so they spent much time in open fields.

Demeter is most notable for the kidnapping of her daughter, Persephone by Hades. Demeter was devastated, and kept the Earth fruitless until her brother and brief lover, Zeus, agreed to get his daughter back. Zeus had not wanted to, he knew his brother was lonely in the Underworld, and thought his brother and his daughter were a good match. However, he did send Hermes to collect Persephone, but the girl had fallen in love with Hades, and had eaten four pomegranate seeds, and so was doomed to stay in the Underworld for six months every year.

Demeter mourns for her daughter during the fall and winter months, when Persephone must stay in the Underworld.

The Titan's Curse
She first appeared in The Titan's Curse at the winter solstice council meeting, having no known speaking role but one of the first few, along with Aphrodite, to vouch for Percy Jackson's safety.

The Last Olympian
She and Persephone make an appearance in The Last Olympian in the Underworld. As a guest in Hades's realm due to her daughter's presence, she nags Persephone about marrying her uncle, Hades, displaying a character similar to that of elderly mothers in modern Western pop culture, and meets Percy and Nico when they go down for the Styx, this time curiously displaying no particular affection for either. Her most famous child is Katie Gardner lead counselor for her cabin. After Nico convinces Hades to reinforce Olympus at a desperate moment, both Demeter and her first daughter joined with him, turning an entire army of giants into a wheat field while in battle and later joining the other gods on Olympus when they reward the heroes.

Family

 * Children: Immortal – Persephone and Zagreus (with Zeus)
 * Children: Demigod – Katie and Miranda Gardner
 * Parents: Rhea and Kronos
 * Siblings: Zeus, Hera, Hades, Poseidon, Hestia, Chiron

Powers and Abilities
Demeter is the goddess of the Earth and Harvest. She has the ability to transform things into plants, and the ability to manipulate plants, and the Earth and Weather Manipulation; the power to psionicly control the weather in a wide range of distances. She can create or summon clear sky, rain, hail, snow, thunderstorms, tornadoes, hurricanes, etc. It can be offensively, or can be a cycle of life for everyday human beings given that she once covered the earth in Ice and Snow. She is a very powerful goddess, and her daughter has similar powers, but is not as powerful as her mother, and when she is in the Underworld she fades like a flower underground. Demeter can transform many things at once (living and not), as she demonstrated in The Battle of Manhattan by turning a row of monsters into wheat. Given that she has succeeded Gaia she probably possess the power of Geokinesis. Presumably possesses the standard powers of a God/Goddess.

Physical description
Demeter is said to look like her daughter, but older and sterner. She has her long wavy black hair braided with dried grass, and has large green eyes, and wears a golden dress, the color of a wheat harvest.

Ceres
Demeter can change her appearance and turn into her Roman counterpart, Ceres. As Ceres, she becomes more disciplined, warlike, and militaristic. She might have more children at the Roman Camp Half-Blood near San Francisco.

Personality
Demeter is somewhat fussy, and nags on her daughter constantly about marrying Hades. She has a high opinion of farming and cereal, and is very absent-minded, which explains her daughter being kidnapped. She is somewhat stern, and seems to have a low opinion of demigods, except for her own children. Demeter is known for her love for her daughter, and also loves her demigod children, though perhaps not quite as much.

Film
In the film, The Lightning Thief, Demeter is played by Stefanie von Pfetten.