Remilia Scarlet is a prominent character in the Touhou Project series, known as the Scarlet Devil. She is a vampire and the mistress of the Scarlet Devil Mansion, residing with her younger sister Flandre and a variety of other residents. Despite her youthful appearance, she is over 500 years old and possesses immense power, including the ability to manipulate fate. Remilia exudes an aristocratic aura, often behaving in a haughty and capricious manner. Her role in the series typically involves being an antagonist or central figure in various storylines, with her charismatic and commanding presence driving much of the conflict.