>>3584581What is the definition of a monster in the first place?
But in all seriousness, Saya has great personality (imho) and skillset. And the story behind was great as well, basically sentient Von Neumann probe that learned the human culture to better adapt and reproduce but instead was handicapped by the same culture as well.
Saya is probably the closest thing I have to waifu, if I wasnt scared even of imaginary relationships.