Kaz is a constantly stressed and sad ghost who tries her best to be a good person and live a nice life. She starts off being really shy and scared of everything, but as she meets some more people and grows up with them, she starts getting confidence and learning how to live her life as a normal person, even if she is a ghost.
She's a mix of the Pokemon Eevee, Vulpix, Fennekin, and Zorua, though she doesn't entirely know that herself, and really doesn't know if she wants to find out. Because of being a mix of all these different species, she's given access to many different powers, one of which including an advanced illusion ability, letting her create visual, audio, smell, and touch, and taste illusions, which she frequently uses.

In the beginning of the series, Kaz won't be speaking very much. She starts off often using illusions to either make images of words appear or even copy others' voices to form her own sentences. As time goes on though, she starts gaining confidence and tries speaking on her own, and after long enough, she is able to, and is able to speak well.