Aura the Guillotine is a formidable antagonist in the series 'Sousou no Frieren.' She is a powerful demon leader known for her cunning strategies and ruthless nature. Aura commands a fearsome presence and is one of the primary obstacles Frieren and her companions must overcome on their journey. Her nickname 'the Guillotine' reflects her deadly efficiency and merciless approach in battle. Aura's interactions with the protagonists reveal the depth of her character, highlighting her motivations and the threat she poses to the world Frieren seeks to protect.