Lilith Scarlett

Lilith Scarlett (リリリス・スカーレット) is a main heroine of Taida na Akujoku Kizoku ni Tensei shita Ore, Scenario wo Bukkowashitara Kikakugai no Maryoku by Saikyou ni Natta. She is Weiss's maid and supports him unconditionally. She has a sweet heart and is kind to people even though she becomes cold and ruthless to people who displease or annoy Weiss. Apparently she is not just a servant and even hints that she was a Professional Assassin in the past.