This character is fascinating because she is listed as Main villain but she can't be listed as a "True Monster" a category used by writers on Evil characters that make the character impossible to redeem or save because they have lost all of their Humanity and are too far gone to save.
I want to see how Esdeath deals with this problem with Tatsumi because she did say that she would kill Tatsumi if he betrayed her but I don't know her reaction, and for his sake it better be good because personally he won't survive if she decides to kill him because her power level is staggering but I fear more for Mine than anything else because to me she is a goner.