Kai

Jozen's Inner Demon, he has Malevolent Flame (Red Fire) that it's from the Raiju Demon. Kai's personality is complex, sometimes he cares and sometimes he's not, he loves to fight, ever since he was in Jozen's mind, he helped him to battle out Platinum to get Goldia back, then a big explosion happened, Kai's spirit is out of Jozen. Years Later, Kai was in a dark alleyway with a new body, he took some clothes and went off to find some people to satisfy his hunger. (Can be any gender and age)