Maya Ibuki

As usual, she was sitting at the headquarters and working at the computer.

Maya is friendly to the Eva pilots and supportive, likely since from her place in Central Dogma and as the monitor of their vital signs she is aware of what they go through. She thus expresses her misgivings to Ritsuko about particularly dangerous new technologies, such as the Dummy Plug system (Episode 14). Maya knows her way around the Magi system rather well, and she proves an invaluable aide to both Ritsuko and Misato during combat situations. Ritsuko admires Maya's skill and efficacy, remarking on her fast typing speed: "Ah, Maya, fast as ever."
It's not clear just how much Maya knows about NERV's hidden agenda, but it is implied that, while Maya doesn't have the malicious pragmatic edge of Ritsuko and Gendo, as Ritsuko's aide she ultimately knows more about NERV's agenda than Misato or Hyuga. She does seem to think that the destruction of the final Angel would end NERV's mission and she had no idea why SEELE would want to kill so many people to get the Evas, so it appears she honestly doesn't know that NERV's true goal is the Human Instrumentality Project.
At first Maya's attraction to Ritsuko only appears to be a professional admiration, enhanced by Maya frequently being seen working aside Ritsuko, and Maya always referring to the other woman as "Ritsuko-senpai" or merely "Senpai", an honorific directed towards a person of higher rank. However, Maya’s transition guide in Episode 26' takes the form of Ritsuko Akagi, who types "I need you" (literally: "INEEDYOU") on Maya’s laptop with her hands over Maya’s, and then embraces her. Before turning to LCL Maya cried "Senpai! Senpai! Senpai!" with a look of ecstasy, tears flowing from her eyes. This implies that Maya may have been secretly in love with Ritsuko, though whether Ritsuko knew about this attraction or reacted to it is uncertain, however Ritsuko often acts caring and almost reciprocates Maya's feelings at times.