Mistral was once human, a long time ago, before the 21st century. As a teenager they were sought out by a clan of Kamaitachi progenitors, in a world where monsters lurked the modern world under the guise of humans. These kamaitachi were fierce and cruel, ill omens indicating impending destruction. They were savages divergent from human society and they relished in this. In choosing Mistral, a weak, rather timid and out of place human, they desired to reform the weak into strong. Infecting Mistral was a tedious process for both parties, and it left the human rather deprived, broken, and beaten both physically and mentally. This lifestyle of brutality and savagery was not for them.

Mistral is a rather simple-minded being, always acting on impulsive thoughts and whatever they feel in their heart of hearts. The latter of which has almost blackened to its core - they live for themself and nothing other than themself. They're highly individualist and narcisstic, holding ill will towards authoritarian and modern societies mostly due to their little understanding of it. They dislike any amount of authority or command directed towards themself, and will most likely always react in an aggressive and violent way. Their animalistic nature and out of touch with humanization has bred them to believe that the only way to solve an issue - is to kill the other person or beat some sense into them.

They are one with nature and the world is their canvas. While more or less beast than man, there is a possiblity there is some humanity left within them. Where they are lacking in modernization, they relish in the wild - it's possible there is a soft spot hidden somewhere deep, deep inside ; though it is this alleged sympathy that leads to weakness. Mistral is a lone wolf simply because anything and anyone else is nothing more than a weight that will hold them back. They have lived this way for so long they outwardly lack any amount of morals, empathies, or sympathies.

They live for chaos and destruction, the thrill of the hunt and the adrenaline rush of battle. Any time they can get their hands and tail dirty is the only time they truly feel alive, a temporary respite to the otherwise constant hollowness they pretend they can no longer feel...because that makes them weak, and Mistral is strong.