9'β

9'β is a character in DARLING in the FRANXX. He was a Parasite who served in the 9's, a special forces unit that APE directly controls. He was partnered with 9'η and piloted a FRANXX called 9 Model. Nine Beta often does not say much and lets his team leader 9'α speak on behalf of the 9's squad. In Episode 17, Nine Beta is shown to be aware of his surroundings as he commented the ruined state of Mistilteinn was not a good place for parasites.