9'ε

9'ε (ナインイプシロン) 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'δ and piloted a FRANXX called 9 Model.

Appearance
Epsilon has purple hair and grey eyes and wears the standard 9’s uniform. Of the four stamens, he is the tallest in stature, as shown in his first appearance with the entire Nines squad in Episode 12.

Episode 06: DARLING in the FRANXX
Strangely enough, Epsilon does not appear in the Nines cameo in Episode 6. It's quite worth mentioning that the other three stamens present above the site of the plantation kissing (Alpha, Beta, and Gamma) are the copilots of the triplet stamens.

Episode 12: The Garden Where It All Began
Epsilon makes his first cameo appearance, this time alongside the rest of his squadmates, including Gamma, Delta (his FRANXX partner, shown in Episode 15), and Zeta (along with her two identical counterparts).

Episode 14: Punishment and Confession
Epsilon makes his third cameo appearance, waiting with their leader to welcome back a sorrowful Zero Two to their fold.

Episode 15: The Bird that Shares Wings
Epsilon appears in the Battle of Gran Crevasse, and he is the first stamen of the Nines faction shown to be in the reverse position, as his partner Delta gleefully tells the klaxosaurs, "You're boring. Entertain us more!"

Episode 17: Eden
Epsilon shows up with his squadmates at Mistilteinn as ordered by Papa. He quietly waits for Alpha to tell Squad 13 that Papa sent the 9's to see them and they had not been cast aside. Epsilon and the other 9's are invited by an enthusiastic Squad 13 to sit down and have some food while they explain the current situation to them.

When Ichigo voiced to Epsilon that she was afraid the 9's came to take Zero Two back, he chuckles, saying she should think of the 9's as Zero Two's former squadmates, not her babysitters.

Episode 20: A New World
Epsilon and his partner Delta were killed when fighting against the klaxosaurs by VIRM.

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

Trivia
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