Karth's Nia Obsession

A little bit of time passing from Karth's initial Nia'ing, finding himself fascinated in the outfit that formed onto him- Even after eventually reversing the change, eventually wanting to try it again more and more. Not realising with each try, more of his body changes without even using that core crystal. So what if he occasionally refers to himself as Nia and speaks with her tone of voice even when not wearing the suit-