Z's Personaility Profile

Like Father, like son

Z doesn't understand electricty either, but he accepts it and doesn't question it. [He used to be like niro when he was younger] 

Also like his son, he can't flirt to save his life [Most men in the Renkia family are horrible flirters]

And believe it or not, Z has a temper. Just don't flirt with his wife and all will be cool.