Gretta

The commander to an army of dead soldiers she raised one by one, Gretta is burdened with all the pain of omnipotent human thought. Spending her whole life learning necromancy and science, she's given herself extreme psychic strength which in turn has given her invulnerability. She senses humanity is far beyond saving themselves, and systematically begins wiping living things from living existence to serve her undead march until nothing is left but hordes of walking bone. She thinks life is beautiful and worth preserving, but only in the form of undeath, which she believes is eternity. It pains her to see something living because she knows it will die. Her own form of empathy as a savior is to turn all living things into shells bound together by uniform consciousness.