Yui Ikari

Yui Ikari, the mother of Shinji Ikari and the wife of Gendo Ikari, was a brilliant bioengineer who worked for Project E at Gehirn. Additionally, she is the daughter of a prominent member of Seele. She died in 2004 as a result of her Contact Experiment with Eva-01, but her spirit lives on within the Eva as eternal proof of humanity's existence.
Though seldom seen in Lilin form, Yui Ikari is one of the more powerful presences in the series. When she is seen as a human, Yui is shown to be kind, optimistic, and motherly. Her faith in humanity and belief that it is worth preserving and remembering stand out when compared to the more cynical characters on the rest of the cast.
As a student at Kyoto University, she met her "sensei", Kozo Fuyutsuki. The nature of their academic relationship is unknown. Fuyutsuki's specialty was metaphysical biology, which has little or nothing to do with what Yui was officially studying, bioengineering. However, the two were close and she regarded him as a friend and confidant. During her first meet with him, she brings up the idea of becoming married and starting a family after college.