Chaos

"I am disappointed, but not for the reason you think. I was hoping that this would be fun for you. Because you see, I'm not asking you to be my influence, my weapon on Nua, because you already are."

Chaos is a god-like being who first appeared in Episode 15 of TAZ: Graduation.

Physical Appearance
Chaos is nine feet tall with iridescent skin resembling mother of pearl, specifically with green, purple, and silver ripples. They wear "the finest clothing [Fitzroy has] ever seen", which includes a burgundy cloak with gold embroidery and onyx lining. The description of the clothes implies they are humanoid. They have completely white eyes. On account of their height, white eyes, and opalescent skin, they are visually very similar to Order.

They seem able to change their appearance, as they have been described as angular/pointy, and curvy in different scenes.

History
They are not the actual manifestation of chaos; rather, they appear when Nua is in a state of chaos to shepherd it towards order and continue the overarching cycle. Their counterpart, Order, oversees Nua's transition from times of order to times of chaos.

Though the two deities normally alternate between one shared physical presence in Nua, Order has spent the past 200 years on Nua, unable to incite chaos due to the bureaucracy that stifles all change or revolution. To fix this, they collaborated with Chaos on a plan that could uproot such bureaucracy: they ushered Gray into Hieronymous Wiggenstaff's School for Heroism and Villainy with a promise of a war, directed Argo Keene and Master Firbolg to apply as sidekicks, and gave Sir Fitzroy Maplecourt magic.

At present, Chaos can only appear to people on Nua via dreams and visions. They appeared in Fitzroy's curse-induced dream, and were able to relieve Fitzroy's exhaustion with a wave of their hand. They gave Fitzroy his wild magic, and their goal appears to be spreading chaos on Nua. Chaos met with Fitzroy in an opulently decorated mansion which they described as their "home," and is not on Nua.

Chaos has also entered the consciousness of The Firbolg and Argo, showing them their "ideal" futures, but giving them limited control of their decisions. When Fitzroy, in his altered consciousness, tries to spare a prisoner, Chaos tells Fitzroy that he is "no fun", and makes Fitzroy kill the prisoner. They dislike the world "control," and wince when Fitzroy uses it.

Sir Fitzroy Maplecourt
Chaos granted Fitzroy wild magic so that he could be "uncontrollable," and they encourage Fitzroy to let his powers run wild as he does whatever he wants. They recognize and invoke Fitzroy's desire to be remembered, and suggest that Fitzroy should not be waiting for anyone's respect or approval. Despite craving power and importance, Fitzroy is uncomfortable with hurting people and becoming Chaos's weapon on Nua—to which Chaos replies that Fitzroy already is. They are satisfied with Fitzroy's performance on Nua and consider him "worthy," but are disappointed by a lack of enjoyment on Fitzroy's part, and state that they'd hoped it would be "fun" for him. Their apparent goal is for Fitzroy to become king and unifier of Nua, bringing peace but not restriction, by letting loose and winning the public war against Gray.

Gray
Chaos granted Gray magic powers similar to Fitzroy's, but they claim that he is shortsighted, unable to see the cycles of war and peace or chaos and order. However, they promised Gray a war, and are determined not to let the Thundermen break that promise by planning an assassination instead.

Order
Chaos and Order are distinct beings, though they share a physical form, and are capable of communicating despite not being able to exist in the same place at the same time. Although their goals are theoretically in opposition, they work together to form a plan to start a war and destroy institutions of structure in Nua, ushering in chaos after an age of order that went on too long.