Laugh Maker

Laugh Maker is the true-identity of the witch, Mimulus Wallenstein. While a respected officer of the Magic Side in the latter ego, her true self is a psychopathic murderer obsessed with making others laugh before slaughtering them. ~!She is the witch who was responsible for the death of Ouka's family.!~

Mimulus is a brooding yet considerate commander who garnered the respect of her troops and cared for them in return. However, her true self was broken and her single-minded belief was that anyone who smiled and died would go to heaven. Instilled to send everyone to their happiest end, Laugh Maker was obsessed in making sure that everyone met their demise with a smile on their face. For her, she didn't know any better and was given the belief that her acts were just. However, even inside her chaotic mind, she longed for death.

(Source: Taimadou Gakuen Wiki)