A scientist belonging to the first section of the Techology Bureau of the Technology Development Department in NERV HQ. She is responsible for the E Project and is the daughter of Dr.Akagi Naoko, who built the basic system of MAGI. Usually in white coat, she consumes lots of coffee and tobacco when she works. She is also a friend of Katsuragi Misato since college years.

Although like her mother she engaged in adultery with Ikari Gendou, she rebelled against him at the final stage of the Complementation Plan. As an act of taking revenge on him, she destroyed all the copies of Ayanami Rei. As a result, she was placed under solitary confinement within NERV HQ. However, since she is needed for the self defence of MAGI, she is released.