Item from Neon Genesis Evangelion by Hideaki Anno / Gainax
The Prototype Evangelion — the first successful Eva, originally yellow and temperamental, piloted by Rei Ayanami, and the only unit whose resident soul is never identified.
Unit-00 is the Prototype — the first Evangelion that actually worked, after multiple failed attempts. It is unstable and temperamental, with a record of going berserk during activation tests before Rei learned to control it. The identity of the soul inside Unit-00 is one of the series' unsolved mysteries, though it is implied to be directly connected to Rei in some way. During Operation Yashima, Unit-00 shielded Unit-01 from Ramiel's beam, taking devastating damage. Rei later used it to throw an N2 bomb at Zeruel (failing) and ultimately self-destructed it to destroy Armisael, dying in the process. Unit-00 is the expendable Eva — limited, outdated, and piloted by the most expendable pilot.
Originally yellow armor, rebuilt with blue armor after being damaged by Ramiel during Operation Yashima. Single camera-eye on the head — unique among Evas. Two domes on top of the head (one white, one transparent green). After upgrade, shoulder pylons added with retro-rockets. Never seen without armor — the only original Eva whose biological body is never revealed.
Also known as: Unit-00, Eva-00, Prototype, Unit Zero