Oh dang, I didn't even catch that. I did a little more digging and found something that might work. I know you said MZ but do you by any chance own MV? If so, you'd be allowed to use this one in MZ:
UPDATE: I am in the midst of creating my game, which I do not like using the same characters over and over again. I kept searching for children characters, only to find more references to the generator than to children characters. Those that did have children characters said that they were...
forums.rpgmakerweb.com
(go to page 1 for terms of use)
In case it helps, here's another set MV owners may use in MZ.
Grab Modern + Outer Basic today!
us.degicashop.com
I'll look some more and will come back if I find anything MZ specific.