Code:002 or Nine Iota is a fictional character in Darling in the Franxx, a Japanese science fiction romance and action anime television series produced by CloverWorks and Trigger.

In the first season, she was introduced as the partner of Hiro, the main character, who has the ability to change his body into whatever he wants. They live in a world where people are not born but are created by a system called CLX. The two meet when they are 15 years old and fall in love. They live happily for a few years until Hiro's partner, Akito, is killed by a monster called the "Zero Ball."

In the second season, Zero Two returns as an elite pilot to help save the world. She must fight against other elite pilots, and the world itself, to survive.