Sotheby is a female Arcanist in Reverse:1999
Originally from 1920s. A wealthy young lady that specialize in potion making. A very curious girl, knowledgeable, but lacks common sense. She has a butler called Mr. Karson. After meeting Sonetto, she agreed helping her and Vertin escaping the enemy and curing mass hallucination caused by the impending "Storm". After being rescued from the "Storm", she joined Vertin's group.
Sotheby is voiced by Harriet Kershaw in English and Ito Miku in Japanese.