She's part German but she's treated like a German, American or Japanese all depending on the mood of whoever is speaking. It's meaningless trivia the show doesn't bother with for a reason.
>>132845577Kaworu has like zero character besides being a static plot device, you could literally make a movie about the guy and he'd stand a good risk at being less detailed than he was in 3.0. It's fundamental to the character that he's a shallow wet rag to wipe off the ejaculate from fangirls/boys.
Rei is top tier character.