In a 1975 interview, Frank Zappa talked a bit about his kids’ unorthodox names:
Cohen: Is one of your children named Moon Unit?
Cohen: Son or daughter?
Cohen: What are your other children’s names?
Zappa: Dweezil and Ahmet.
Cohen: Is Moon Unit the oldest?
Cohen: What do you call her around the house?
Zappa: I call her Moon and I call Dweezil ‘Dweezil’ and I call Ahmet ‘Ahmet.’
Cohen: I’m wondering what psychological effects a name can have.
Zappa: Well, first of all, I knew that they were going to be unique anyway because of certain other attributes, so why not have a name that goes with it. They all like their names and the kids at school do too. They don’t make fun of them; in fact, most of them are jealous of their names. You know, it always amazes me when someone who is in my age group, or even younger, asks me a question like why did you name your children that. It’s a reactionary kind of question. Why the f*ck not name your kids something like that? They’re having a good time. Besides that, if they ever wanted to change their names they can do it. It only costs about $15.
Cohen: You can’t tell from the name Moon Unit whether it’s a boy or a girl. Had Moon Unit been a boy, would you have named him the same thing?
Zappa: No, I would have named him Motor Head.
Frank’s fourth child, Diva, was born in 1979.