Dark Sailor Mercury is created when Kunzite manages to kidnap Ami in a moment of vulnerability while the other Senshi are busy. He exposes her directly to the power of Queen Metaria, causing drastic personality changes as well as the alterations to her uniform. She is self-confident to the point of egotism, and continues to attend school in civilian form, mainly to antagonize Usagi by brainwashing all of her former friends. Dressing predominantly in black, evil-Ami tends to move about slowly and dramatically, and when confronting the Senshi gives a sense of sadistic glee.
Dark Mercury seems to have no intention of being a follower to anyone, and is always trying to pursue her own agenda, which is to kill her friends and become as strong as possible. She shows blatant disrespect to Kunzite and the other Shitennou, even to Queen Beryl, perhaps because, unlike even the Shitennou, she had been directly exposed to Metaria's power during her conversion, as opposed to having Queen Beryl or another intermediary filtering it.
Despite these alterations, certain aspects of the real Ami still remain. She still wants to do well in school, and wants friends, hence the brainwashing of her classmates. She also seems to retain a sense of sympathy, which is evident when she repairs Nephrite's cape for him, stating that she does not like to see him alone.[26]
Periodically, Sailor Moon attempts to heal her friend with the power of the Silver Crystal. Mercury is always snatched away before this can be completed, but it has some effect, ultimately resulting in her recovery. In Act 28, the catalyst for her finally returning to normal is when, having defeated Sailor Moon in battle, the sight of her injured friend causes her to realize she cares about Usagi, and to remember who she really is. After being healed, she has no memories of what happened while she was Dark Sailor Mercury.
First Appearance: Act 1
Human Hair Color: Black
Human Hair Style: usually pulled back
Senshi Hair Color: blue with lighter highlights
Senshi Hair Style: cropped short
Class: 2-1
Class Rank: #1
Teacher: Haruna Sakurada
Mother: Mizuno Saeko
Pets: Has an aquarium in her room
Friends: Tsukino Usagi, Kino Makoto, Hino Rei
Other: In Act 20, Ami is captured by Kunzite. In Act 21, she transforms into Dark Mercury, her evil form. She is finally turned back in Act 28, after fearing that she killed Sailormoon.
