007

 is a character in DARLING in the FRANXX.

Personality
Unlike the original Nana, she does not displays any concern or compassion towards the Parasites. Granted, she may have had her emotions suppressed much like Hachi had. As time goes on, it is shown that she cares about the parasites, especially with Kokoro and her pregnancy.

Etymology
Nana is a feminine Japanese name. It is also the word for "seven". She is named after her code, revealed in Episode 20 to be 007.