*Esdeath is one of the two main antagonists (alongside Prime Minister Honest) of the manga/anime series Akame Ga Kill!. She is a high-ranking general of the Empire, one of the most powerful Teigu users in the world and the leader of the Jaegers. She also serves as the biggest physical threat of the series.
Esdeath was responsible for the deaths of millions of people in the north of the country and several other conflicts and war on account of the rebellion against the Empire. She has committed the second largest number of horrible atrocities of any member of the Empire, behind Prime Minister Honest himself. She is the arch-nemesis of Tatsumi (whom she has a obession on), Akame, and Najenda, and the mother figure to Kurome.
Esdeath is a sadistic, barbarous and bloodthirsty woman who lacks empathy for people whom she deems weak despite appearing to care about those working under her. Ever since she was motivated by her father's philosophy ("The strong survive and the weak perish"), she has gone through torturous activities that involve putting her enemies through great pain, both physically and emotionally.
She has no qualms about her ruthlessness in battle or killing innocent people to get what she wants, and rationalizes her behavior with her father's old creed.
Despite all of this, Esdeath has shown a genuine and charismatic side of her. She is also known for treating her subordinates fair and well, as she is there for them when they're anguished.
A good example of this is when Esdeath embraced Seryu while she mourned over the death of her colleague. She lets her subordinates do as they please, which, in return, encourages their intense loyalty and devotion towards her, making her followers the strongest offensive force of the Empire. This side of her truly shines when expressing her love for Tatsumi, in which she offers a warm and comforting affection for him, even swearing to protect him from anyone that dared harm him and promising to clear up his name as a member of the Night Raid.*