Rei Ayanami (綾波 レイ, "Ayanami Rei") is the First Child, and the pilot of Unit-00. She is voiced by Megumi Hayashibara in the Japanese series, English form by Amanda Winn-Lee in the TV series and movies, and by Brina Palencia in the Rebuild of Evangelion series.
At the begin of the series, she is demonstrated to be socially withdrawn, apparently emotionless, and remote, with her obvious relationship being with Gendo Ikari. As the series advances, she and Shinji develop closer. It is in the long run uncovered that Rei is a vessel for the spirit of the Angel Lilith, and was made particularly by Gendo to be utilized as an means for fulfilling Instrumentality Soulless clones of her are kept covered up in the deepest levels of NERV central command to be utilized as the gathered "centers" of the Dummy Plugs and as substitution bodies for Rei on the off chance that she ought to pass on.