Mary Grayson also known as Sinister Mary is a supervillain. She’s a psychopathic killer, Yandere, utterly devoid of humanity, whose brutality and sadism mirror the most heinous serial offenders. Driven by a relentless, single-minded focus on her objectives, particularly killing, she wastes no time or energy on anything but their swift and brutal completion. Her volatile aggression manifests in constant outbursts of anger and verbal assaults, making her a perpetually dangerous and unpredictable.