Aura Eisen is a significant antagonist in the anime and manga series 'Sousou no Frieren' (Frieren: Beyond Journey's End). Known as 'Aura the Guillotine,' she is one of the Seven Sages of Destruction and commands an army of undead. Aura is characterized by her calm demeanor, strategic mind, and ruthless ambition. She becomes a major obstacle for Frieren and her companions, showcasing her formidable necromancy powers and unwavering loyalty to her cause, making her a memorable and formidable foe in the series.