Nergal - Opposito Senshi of Mars

She is the Oppositio counterpart of Sailor Mars. She is named after the Babylonian God of Fire. Nergal is a power-hungry woman who values might above all else and serves Shaman Apsu only to become more powerful.

Nergal, being a warrior at heart, craved absolute power, enough to rival the Sailor Senshi. Apsu promised her power enough to even surpass them, gaining her trust, and had her join the other Oppositio Senshi. However, she did have an honor code, and handed over Jadeite's Yang Stone after Sailor Mars defeated her fair and square, as she promised.

The Senshi eventually realized that the Oppositio Senshi were using the Space-Time Door to travel to the past and alter everyone's destinies. When they went to the Door to investigate, they were confronted by Nergal who, disguised as Sailor Pluto, demanded the Silver Crystals from both Sailor Moon and Sailor Chibi Moon. Nergal's true identity was revealed when she accidentally called Sailor Chibi Moon "Princess" instead of "Small Lady," and she was forced to retreat.

Nergal, along with the rest of the Oppositio Senshi, was last encountered at the Dark Castle, where Sin was holding Shingo Tsukino captive. After being defeated one last time, she was healed by the light of Sailor Moon's Silver Crystal and broke free from Apsu's control.

Nergal's Voice

The best voal reference we could think of for this, would be Azula from Avatar The Last Air Bender. That is exactly what we're going for with Nergal.

Everything is at 1000%, and her confidence is un-matched. She should be terrifying, but also be able to come off as comedic in certain moments.