Sasha Necron, sixteenth-generation heir of the Necron family and direct descendant of Elder Demon Emperor Ivis Necron, underwent the Dino Jixes spell at birth to become the Demon King’s vessel. This ritual fractured her existence, creating twin sister Misha Necron, who was destined to re-fuse into Sasha on their fifteenth birthday and cease existing independently.

Initially arrogant and haughty, Sasha wore the epithet "Witch of Destruction" with pride, reflecting her royal upbringing and revered status at Demon King Academy. She displayed hostility toward Anos Voldigoad upon meeting him, perceiving dismissal of her abilities, yet demonstrated sharp leadership and strategic skill in team challenges. Her relationship with Misha seemed antagonistic—Sasha frequently insulted her as a "junk doll"—but masked a fierce protective instinct. She cultivated Misha’s hatred to ensure her survival, devising spells Zexis and Delt to subvert the fusion by making Misha the original entity. This stemmed from childhood, when only Misha could withstand Sasha’s uncontrollable Magic Eyes of Destruction and helped her master them, driving Sasha’s lifelong research to prevent absorption.

Sasha’s magic specializes in destruction. Her innate Magic Eyes disintegrate matter, spells, and abstract concepts like time-stop effects. Recognized as a Chaos Generation prodigy, her power surged after integrating past and present sources, mastering advanced spells like Vebzud and creating original magic. Training under Anos elevated her abilities beyond most modern demons.

Key shifts occurred through Anos: after he defeated her in a duel and called her eyes "beautiful," she developed romantic feelings. When Anos disrupted the fusion ritual, enabling both sisters to coexist, Sasha thanked him with a "kiss between friends," cementing loyalty as she acknowledged him the true Demon King. Later revelations identified Sasha as Abernyu, Goddess of Destruction and Anos’ Mythical Age adversary. This heritage granted access to Abernyu’s authority, manifesting the Sun of Destruction Sargeldonav. When possessed by Abernyu, she wielded Venuzdonoa, the Demon Sword of Destruction, in its original form; her divine connection surfaced during extreme duress or emotion.

Sasha retained the ability to fuse with Misha via Dino Jixes, becoming the unified Aisha to combine their powers and knowledge. Personal traits include heavy sleeping, difficulty waking, and alcohol vulnerability. Physically, she has long blond hair in pigtails with black ribbons, blue eyes, and a slender frame, typically clad in Demon King Academy’s black uniform.