Using a French purple hat, mask that covered his eyes, black lipstick, well yet disarranged blonde long hair, slim in appearance, flamboyant puffed sleeves, white gloves, coat, vest, white pants and long black boots alongside his baton, the greatest musician of all the singularies, for his love to music was evident even in his garments, for life as Mozart always says, carries the soothing voice of the muses.

The person himself is fond of talking with people comparatively, jokes in particular. Generally, his jokes are ones related to music, hard to be understood. The ones that he REALLY likes, the dirty jokes, are intentionally sealed (because his beloved Marie told him to). Still, occasionally he blurts them out anyways.

Mozart was originally intended to be the host of the Demon God Amdusias, but according to him he "sold his soul to music" and so spared himself the fate of being possessed.

Mozart had taken over an entire chamber of computers that Chaldea had left there, while ignorant to computers, he found the sounds they produced to be moldable, then an idea came into his mind..he had heard a worker listening to "electro" music, perhaps...

"Well, if Master doesn't need me, I believe I can amuse myself for the time being, bahaha!!." Mozart began to tinker with the computers as servants passed by some throwing glances, raising their eyebrows or even stopping to see what the caster class servant was ....doing.