Personality
Amaterasu is known for being quiet, mature, and kind. She always aids those in need, but is also unafraid to show her opinion. For example, when Mr. Orange talks to her after drinking his sake, Amaterasu looks away and breathes, implying he has bad breath. She is also very intelligent, as when she encounters Rao at Queen Himiko's throne room, she figures out that she is the demon lord Ninetails. Amaterasu is apparently offended quite easily, shown when Mr. Orange says she doesn't look very smart, as well as Issun saying that "Ammy gets kinda sensitive about her flaws!". According to Mrs. Orange, Amaterasu is quite fond of her cherry cakes. She also has a low attention span, which results in her falling asleep if someone explains something for too long or if she already knows what is being explained.
Like Issun, she is not very keen on bathing, showing her dismay with the activity when offered free bathing at the Sasa Hot Springs.

Appearance
In the game, Amaterasu takes the shape of a white wolf with crimson markings across her body, a tail shaped like a calligraphy brush (which is how the Celestial Brush is used) and a Divine Instrument floating above her back. Only particular beings, such as Issun, all other Gods and spirits, and presumably most animals and demons can see her true form. Also, humans with a strong belief in the gods can see her markings and instrument. When Amaterasu's ink pots are empty, she will temporarily revert to a plain white wolf. This is how most people see Amaterasu.