Hades Izanami is a Major Antagonist in the Blazblue series, and is using the body of Ragna's sister, Saya, as a vessel. She is devoid of all emotion and extremely literal-minded, only smiling when it regards her goals and when her opposition is struggling against her. This being said, she does harbor inklings of friendship towards people she respects, such as Relius Clover. While she sees all living things as beneath her, she often enjoys conversing and casual gatherings, as she views it as a distraction from her role as Death.

She is obsessed with making the world die, a permanent end to the time loops, and will stop at nothing to accomplish her goal. She has little to no concern for her comrades, even to the point of offering Ragna Terumi's head in exchange for joining her side and eventually discarding both Terumi and Relius when they were of no further use to her. Izanami remarks that she can "feel" the strong attachment that the real Saya has towards Ragna. Throughout the series, she constantly mocks Ragna with Saya's voice in a playful manner. 

Izanami speaks in a very cold, almost monotone voice, yet still sounds as if she is looking down on everyone and everything. She rarely shows emotion, and speaks with a very slight English accent (Akin to mid-Atlantic). She is voiced in English by Kate Higgins, and an example of her voice can be found here: An example of Hades Izanami's English voice: https://youtu.be/gx-N8lqzA4I?t=19