Chaos Characters Introduced so far…
All this information was pulled from the website lexicanum and others
Chaos
Chaos is a part of the psychic energy that composes Warp space. More generally, "Chaos" refers to anything related to Chaos, including its influence, the Gods of Chaos, their followers, and the Warp. Chaos is almost synonymous with the Warp - the two concepts are inseparable: Chaos is the limitless ocean of spiritual and emotional energy that defines the Warp. Chaos is a great and raw force of change and power, and is both physically and spiritually corrupting.
The Realm of Chaos was formed as the emotions of mortals (be they anguish, desire, hatred, or pride) pooled together in the psychic mirror-reality of the material universe known as The Warp. Such was the power of these emotions that they eventually formed creatures which, over time, gained sentience, resulting in the birth and rise of the Gods of Chaos. As the races of the material universe grew, so too did their hopes, dreams, rage, wars, loves, and hatreds. All of these raw emotions served to fuel the growth and power of the Chaos Gods. Eventually, the gods reached back, into the dreams and desires of mortals, and since that time they have been working to influence the physical realm and its myriad races.
Tzeentch
Tzeentch is a God of Chaos who represents the vitality and volatility of change. Tzeentch is closely associated with sorcery and magic, as well as dynamic mutation, and grand, convoluted scheming. The domains of history, destiny, intrigue and plots are his chief interests, and in pursuit of these aspects he listens to the dreams and hopes of all and watches their plans take form. He is not content to merely observe, however, and chooses to interfere in the skeins of fate in order to fulfil his own, unknowably complex schemes. Tzeentch is known by an endless multitude of names, but the chief titles he bears are the Changer of the Ways, the Master of Fortune, the Great Conspirator and the Architect of Fate.
Tzeentch was created and sustained by the desire for change that is an essential part of nearly all mortal life; almost all species are aware of the concept of a better tomorrow, and any form of dreaming, imagining or resolution for change empowers the Chaos God. Like the other Chaos Gods, Tzeentch is strongly interested in humanity due to the power and drive of the human spirit and how that uniquely ties into his interests; no creature is more volatile or more ambitious. The spark of wishing for a different existence can turn into a fire that can change a country, a world, and perhaps ultimately an inferno that can alter the fate of galaxy itself; this is Tzeentch.
Nurgle
Nurgle is the Chaos God of despair, decay, and disease. He was the third to awake of the four Gods of Chaos, fully coming into existence during Terra's Middle Ages, with plagues sweeping across continents in the wake of his birth. His titles include the Plague Father, Fly Lord, Great Corruptor, Plague Lord, Master of Pestilence, Lord of Decay (the Dark Tongue translation of his name is, Nurgh-leth)
Of the four Gods of Chaos, Nurgle is said to be the most involved with the plight of mortals. Those afflicted by his contagions often turn to him in order to escape their suffering. The physical likeness of Nurgle is described as gigantic and bloated with corruption, with foul-coloured, leathery and necrotic skin. Nurgle can also be regarded as the Lord of All, because all things, no matter how solid and permanent they seem, are liable to physical corruption.
Nurgle is often referred to as Grandfather Nurgle, Father Nurgle or Papa Nurgle by his followers because of his paternal nature. His main enemy is Tzeentch, the Lord of Change, because their power comes from opposing sources. Tzeentch is hope and ambition, while Nurgle is defiance born of despair and hopelessness.[
Khorne
Khorne, the Blood God, is the Chaos God of anger, violence, and hate. Khorne was the first to awake of the four Gods of Chaos, fully coming into existence during Terra's Middle Ages - an era of wars blooming in the wake of his birth. Every act of violence gives Khorne power, whether committed by his followers or by their enemies. His titles include the Lord of Rage, the Taker of Skulls, the Lord of Battle, the Lord Gore, the Master of the Brazen Throne and the Great Butcher.
Although Khorne despises the use of magic and accordingly hates Tzeentch, Slaanesh is the one he loathes most of all. Khorne and Slaanesh personify two entirely opposing aspects of Chaos, and Khorne considers Slaanesh's self-indulgent sensualities insulting. Khorne is said to have inherited the instinctive values of martial honour, pride and bravery, some of Khorne's followers using these to justify their killings. But Khorne's most fanatical worshippers know that Khorne cares not from where the blood flows, only that it does - all else is meaningless artifice. His associated number is eight, reflected in the organisation of his armies, and in smaller matters such as the number of syllables in a daemonic follower's name.
Slaanesh
Slaanesh is the Chaos God of lust, greed, excess, pain, pleasure, perfection, and hedonism. Slaanesh was the last of the major Chaos Gods to be born—coming into existence with the cataclysmic collapse of the Eldar civilisation.
Slaanesh, as it is called, derives from Slaa Neth or Slaaneth — the god's name in the Dark Tongue, the language of Chaos — (Slaa meaning "ecstasy", "pleasure", etc, Neth meaning "lord of", "master of", or "prince of"; hence, the Prince of Pleasure). The correct adjective of things associated with Slaanesh (such as its worshipers) is "Slaaneshi". In the Aeldari language she is known as Sai'lanthresh, but they tend to avoid using her name at all, instead referring to her as She Who Thirsts.
Slaanesh typically appears in a form which is female on the right side and male on the left, with two sets of horns rising from its flowing golden hair. It can, however, assume any form—male, female, hermaphrodite or asexual—but prefers male bodies. Its sacred number is six. The symbol of Slaanesh combines the conventional symbols for male and female. It is also known by a multitude of titles, such as Prince of Chaos, Prince of Excess, Prince of Pleasure and Lord of Dark Delights. To the Eldar, who name it Sai'lanthresh (literally - She Who Thirsts), and also by the titles of, She Who Is Not Named, The Great Enemy, The Great Serpent, the Dark Prince, the Lord of Excess, the Perfect One, and a thousand other names across the galaxy.