Rei Ayanami is a character from Neon Genesis Evangelion and is a major character introduced in the second season of The Knights of the Multiverse. Originally the pilot of Evangelion Unit 00, she piloted her own personal Getter Robo unit when she joined the Crystal Knights, and later Getter Liger in Getter Robo G while the original Getter Team took command of Shin Getter Robo.
For the most part, Rei is socially withdrawn, seemingly emotionless, and rarely interacts with anyone. She appears emotionless and depressed and will follow orders without question (which can sometimes be viewed as obedient and passive), even if it means risking her life. In battle, she has no self-preservation instinct and will not ignore orders to save herself.