9'β

9'β (ナインベータ) 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.

Etymology
Similarly to Zero Two, he received the name from Papa. Beta is a letter in the Greek alphabet.

Quotes
"Doesn't matter how many of you there are."

- Episode 15

Trivia
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