Greater titan

The greater titans, sometimes referred to simply as the Titans or the elder gods, were a group of greater deities that once dominated much of the plane of Arborea, until they were overthrown by the Olympian pantheon and imprisoned in the bowels of Carceri.

Base of Operations
The majority of the greater titans inhabited Mount Othrys, a great mountain on the Othrys layer of the plane of Carceri, though the Titans preferred to refer to the plane as Tarterus. The name Othrys, as well as most of the names for the other layers of Carceri, were allegedly all derived from the special language of the greater titans.

A few greater titans managed to escape imprisonment and still lived on the plane of Arborea, dwelling within its hinterlands. These titans were either nursing their grudges against Olympians or were completely oblivious as to most of the greater titans having been imprisoned.

Notable Members
The most notable of the greater titans that were imprisoned in Carceri included the following:
 * Cronus: The leader of the greater titans. Some claimed he was the oldest male titan, while other accounts spoke of him being the youngest.
 * Crius: The greater titan of density, gravity, and war.
 * Coeus: The greater titan of fear, cunning, and arcane magic. According to some accounts, he was the father of the Olympian Hecate or her grandfather.
 * Hyperion: The greater titan of the sun.
 * Iapetus:
 * Mnemosyne: The greater titan of memories.
 * Oceanus: The greater titan of the sea and other bodies of water.
 * Phebe:
 * Tethys: The greater titan of elemental earth and justice.

One of the few not imprisoned within Carceri was Rhea, the former wife of Cronus and progenitor of the first generation of Olympian gods.

Rumors & Legends
Some believed that the titans personified the building blocks of the Prime Material and that their continued existence was what kept the Prime functioning.

History
According to the Olympians' understanding of how the multiverse came to be, as documented in their the tome the Great Theogony, before everything began there was nothing but an indescribable roiling mass of chaos. From this chaos arose various aspects of nature, such as the planes of Arborea and Tarterus, and a handful of primeval gods that included Gaea and Eros. During this time, the primeval god Uranus was created by Gaea and soon after the two married. The first creatures to come from their union were the greater titans. They were favored by Uranus above all of the other children that he would come to have with Gaea, giving them special treatment.

Some of the children that followed were fair in appearance like the titans, whilst others were far more monstrous, such as the cyclopses and the hecatoncheires. Horrified by their hideousness, to the point that he hated to look upon them, Uranus hid his monstrous progeny away  far from the eyes and minds of mortals.

Some accounts told of Uranus locking his progeny up inside Gaea's own earthen depths, causing her pain. Others told of him imprisoning them in the plane of Tarterus. Regardless of where they were imprisoned, his act angered Gaea and over time she grew sickened by the imprisoned state of her children. Gaea then convinced the titan Cronus to overthrow his father and thus avenge her mistreatment.

Cronus, accepting the goading of his mother,  did battle with Uranus. However, none of the other greater titans came to their brother's aid. Critically wounded by the battle,  Uranus bled upon Gaea and thus fertilized her once more, causing the creation of the Furies and the gigantes. The wounded Uranus then fled from the battle to the farthest reaches of the multiverse.

Cronus then married the titan Rhea, becoming ruler of the titans, but went back on his word. Furious, Gaea laid a curse upon Cronus, proclaiming that one day his own children would usurp him, just as he had his usurped his cruel father. Fearful of the curse, Cronus devoured each of his first five children  as they were born to his wife. These first five children were Demeter, Hades, Hera, Hestia, and Poseidon.

On their sixth child, a furious Rhea tricked Cronus into instead swallowing a stone in swaddling clothes. This gave Gaea the chance to smuggle the child away, one who would later be known as Zeus, and leave him in the care of nymphs on a remote island. When he reached adulthood, Zeus returned disguised as one of Cronus's cupbearers and gave him a potion that induced him into vomiting up his five other children.

The Olympian powers came together and fought the Titans, a conflict that would come to be known as the Titanomachy. After a decade of battle, the Olympians ultimately overcame the Titans and imprisoned them in the bowels of Carceri. According to some accounts, Zeus had managed to convince some of the hecatoncheires to aid them in battle against the Titans and once the war was won he send them down with them to act as guards, making them too prisoners in all but name. Additionally, the Titans were initially chained up by Zeus within Carceri, but the god Hephaestus eventually convinced him that the chains were unnecessary.

Their mother Gaea initially made a number of attempts to avenge or liberate the Titans, sending a number of monsters against the Olympian powers, such as the gigantes. However, the new generation of gods held fast against her and would imprison the gigantes in Carceri alongside the Titans.

History with Toril
In the month of Hammer, in the, a group of adventurers from Ravens Bluff found themselves transported to the plane of Tarterus after defending the githzerai fortress of Tah'Darr from a tanar'ri incursion. At the urgings of the fallen paladin Elendil, the adventurers sought out Mount Othrys and Cronus for a way back to their home world of Toril.