Hiro (ヒロ, Hiro) is the main protagonist of DARLING in the FRANXX. He was a Parasite with the codename "016" and was once known as a prodigy among the Children. However, he failed to synchronize with his partner Naomi and was considered nothing but a failure as a pilot. As a result, he did not know where he belonged and struggled to find his place in the world. However, upon being partnered and piloting with Zero Two, he became an official Parasite and found a new reason to live. Hiro and Zero Two were the newest members of the 13th Plantation, piloting a FRANXX called Strelizia.
Ichigo (イチゴ, Ichigo) is one of the main characters in DARLING in the FRANXX. She is a former Parasite with the codename "015" of the Thirteenth Plantation, where she was partnered in boy-girl pair with Goro to pilot a FRANXX called Delphinium. She was the official leader of Squad 13.
Due to her feelings for Hiro, she struggles between her selfishness and her responsibilities as a leader. Out of the entire squad, she alienates Zero Two the most and almost succeeds in separating her from Hiro for good until she realizes Zero Two is the only one Hiro loves, which prompts her to give up on him for the sake of his happiness and she eventually finds a new love in Goro at the end of the series.