Adult

Adults (オトナ,Otona) live in plantations. The Adult population resides in tall glittering skyscrapers at all times and rarely walk outside. Giant robots called Franxx protect adult-filled cities against the Klaxosaurs.

Appearance
Each adult usually wears a white headdress which covers their eyes and nose. Their skin seldom exposed in the air. In Episode 01, a large population of adults from Thirteenth Plantation attended the ceremony. Their clothing is quite standardized (i.e. long garments). Some of them held a binoculars-like instrument during the ceremony.

In Episode 10, Old Man and Old Woman are two adults who live in the Inside City. Old Woman also chat with Zorome for a while.