Pandæmonium

Pandæmonium is a major antagonist in The Executioner and Her Way of Life. She is the Pure Concept of Chaos in the anime or Evil in the light novels.

History
The daughter of Countess Libelle and older sister of Manon Libelle, Pandæmonium is a Lost One that became one of the Four Major Human Errors with her Pure Concept of Chaos. After being sealed in the fog for over a thousand years, Akari minutely warped the fog by using her ability to manipulate time to escape from the Pandaemonium's monster contained in the fog. Although still trapped, Pandaemonium was able to manifest part of herself in the town of Libelle with the assistance and bodily sacrifice of Manon.

Personality
Described by her mother as a bright girl "full of energy" who adores singing and dancing, Pandæmonium is cheery and playful, though with her Pure Concept and becoming a Human Error, she has no memories or identity associated with her previous self. Rather, her sole purpose has transformed into inflicting as much chaos as possible. Her mother also commented that Pandaemonium loves movies above all - after becoming a Human Error, Pandaemonium states that she loves horror movies and strives to replicate them, likely due to her Pure Concept.

Abilities

 * Shapeshifting: Pandæmonium is capable of creating monsters using her Pure Concept, in addition to transforming her own body.
 * Regeneration: She uses her blood to create other beings, and is capable of regeneration as seen with her decapitating herself. She can also resurrect other beings by using humans for magecraft material, as she resurrected Manon using Mitsuki Matou's body to complete Manon's body.
 * Immortal: Pandaemonium remains a youthful girl despite hundreds of years passing in the fog. She is also able to resist Akari's attempt to control her through time, as she can manifest herself in multiple spaces at once.

Manon Libelle
Although the older sister of Manon, Pandaemonium appears to be younger than Manon likely due to the effects of her Pure Concept. Manon was unaware that Pandaemonium was her older sister, until she recalled her mother saying that she had an energetic and playful older sister who adored movies upon being resurrected by Pandaemonium.