Hiro

Hiro (ヒロ) is one of the main characters in DARLING in the FRANXX series. He is a prodigy Parasite with codename "016" of Thirteenth Plantation, where he's partnered in boy-girl pair to pilot a FRANXX.

Appearance
Hiro has a standard "slim" male physique with black, shaggy hair and rich blue eyes. His checkered past has left him with an emphatic expression on his face, despite his personality.

Personality
A former star student of the academy, Hiro's inability to pilot FRANXX has left his hopes low, even to the point of choosing to leave Cerasus until his former partner Naomi encourages him to stay. His emotions are strong, but his heart keeps him from giving up.

History
He came from the same orphanage as code 703 (Naomi) came from and thus they ended up as a pair. They failed the exam and Naomi was forced to leave Plantation 13. Hiro, however, was given a special permission to stay, which he declined. Naomi's plane was attacked by a klaxosaur, but she survived.

Zero Two
Hiro first met Zero Two when she was skinny dipping. Despite that others may discriminate her for her horns, he found that they are alluring. When they met, both of them were lonely and shared the struggle of not being able to pilot. After kissing Zero Two and piloting Strelizia, he was keen to do it again and prove his ability. Hiro blushes when Zero Two is around him, but does not seem to be uncomfortable with her presence.

Ichigo
Ichigo is Hiro's childhood friend. He cares a lot about her, but seems to be oblivious to her feelings for him. When Hiro piloted Delphinium with her, their compatibility was 100%, higher than any other pair. However, their FRANXX deactivated shortly after. When Ichigo kissed him at the end of episode 2, he felt nothing but guilt.

Goro
Goro and Hiro have a good relationship and grew-up together. He's often supportive of Hiro and cheers him on in his endeavours. It seems they share a room.

Zorome
Zorome and Hiro have clashing personalities. Zorome often mocks Hiro and his inability to pilot.

Mitsuru
Mitsuru and Hiro have a negative relationship. Mitsuru seemed to have looked-up to Hiro, but finds his current inability to pilot pathetic. He mocks him and seems to have an inferiority complex against him.

Naomi
His former partner while training to become Parasites. When tested in their ability to connect to each other, it is shown that they are unable to do so resulting in failing and Naomi being expelled. Naomi cares for Hiro enough that she gets upset that he chose to leave Plantation 13 along with her. When they're meant to get on a transport to leave, she prevents him from getting on board by throwing her suitcase at him. The last thing she tells him is that she likes the name he gave her, and that she hopes he finds a good partner.

Etymology
His name is a possible reading of his code, 16. The hi is 1 while the ro is 6.

Trivia

 * 1) It is revealed in episode 3 that Hiro might be a "special specimen" due to his compatibility with Zero Two in Sterilizia.

Hiro Хиро