The first Immortals were the offspring and were called Gaia (Earth), Tartarus (Hell) and Eros (Love) and Erebus (Darkness).
The World of Chaos
The word 'Chaos' came to mean the name of the first, primordial god and also as a term to describe the place of origin for the universe. Chaos, as the place of origin, existed when all things lay in a great confused mass. The Earth did not exist. The land, the sea, and air were all mixed up together so that the earth was not solid, the sea was not fluid, nor the air transparent. There was no sun or moon. The World of Chaos was a dark place of waste where cold, hot, moist and dry were all in conflict. The World of Chaos was a place of total confusion where light was heavy and soft was hard.
Chaos the Elemental Deity
Over this shapeless mass reigned a careless deity called Chaos, whose personal appearance could not be described, as there was no light by which he could be seen. Chaos was a purely elemental being without a physical form. Chaos was the first god who formed the very fabric of the universe. He created Nyx, the goddess of the dark. From Nyx and Chaos came the first divinities who emerged self-formed at the beginning of the creation of Earth who would create 'Order out of Chaos'.
Order out of Chaos - The Primordial Gods, the Immortals
The primeval gods were the basic components of the universe which were emerged at the time of creation and helped to create 'Order out of Chaos'. These primeval gods were inseparable from their native elements. The first divinities who emerged from Chaos included the Darkness, Night, Light, Day, Earth, Air, Sea, Sky, Fresh Water, Underworld, Procreation and Time. The primordial gods are depicted as a place or a realm and had genders assigned to them. They were also described as a race of giants. The most famous of these primeval gods, or Immortals, were:
Nyx, the dark goddess of Night and wife of Chaos
Erebus, son of Chaos and Nyx, darkness and the Underworld. He supplanted Chaos and married his mother Nyx
Aether & Hemera: Erebos and Nyx had many children including Aether (Light) and Hemera (Day) who dethroned their parents, and seized the supreme power.
Aether & Hemera created Eros, Tartarus, Ponus and Gaia
Eros (male), procreation
The primeval Eros is also referred to as Phanes which distinguishes him from the later god Eros who was the son of Aphrodite
Pontus (male), the sea
Tartarus (male), the abyss beneath the Underworld
Gaia (female), the Earth Mother who created Uranus
Uranus (male), the sky and the heavens
Gaia and Uranus together became the parents of twelve gigantic children - the Titans.
Order out of Chaos - The Titans
The Titans were born from the union of Gaia with Uranus and were the first born of the immortals. The names of the first generation of 12 Titans were:
Male Titans: Oceanus, Hyperion, Coeus, Cronus, Crius and Iapetus
Female Titanides: Mnemosyne, Tethys, Theia, Phoebe, Rhea and Themis
Other primeval gods who brought order out of Chaos included Clymene (daughter of Oceanus), Hydros (water and mud), Nesoi (female, islands) and Ourea (Mountains).