When needed, she was charming and fey, but her self-serving and reptilian personality betrayed her sooner or later. She disdained mortals, regarding them as mere disposable tools in her schemes. She never forgave any kind of slight and was focused on obtaining more power and wealth. Tiamat was arrogant, greedy, hateful, spiteful and vain. Her manifestation as Azharul was her other 'public' face used for when foes challenged her to combat, meanwhile her original body remained secluded in her lair. Tiamat had three manifestations in Avernus as well, one of which never left the gate to Dis. The Undying Queen was a dracolich version of The Chromatic Dragon. Sometimes, The Chromatic Dragon appeared in the form of Tchazzar when manifesting in Chessenta.

The Chromatic Dragon was a dragon with stubby legs and five heads that could be any combination of head belonging to a chromatic dragon, the skin of each merged into three stripes - blue-green, gray and purple before they merged again into brown skin that covered her tail. She always wore dark robes and frequently had a seductive smile on her face. The Dark Lady was a mulan woman with long dark hair and completely black eyes. Her body also had traits in common with a wyvern, including a long tail tipped with a venomous stinger. Each head was able to operate entirely independently of each other and had the powers of a member of the respective race of dragonkind. Tiamat was a unique chromatic dragon, who had one head for each primary color of the most common species of chromatics ( black, blue, green, red, white).

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