Emma Emmerich Danziger (nicknamed "E.E.") is an AI programmer and the stepsister of Hal "Otacon" Emmerich. She is in charge of developing the AI that controls Arsenal Gear.
When Emma was a child, her mother, Julie Danziger, married the father of Hal Emmerich. Emma and Hal became very close as children, and they would often play house, in which they were a married couple.
When Hal was an adolescent, he was seduced by his stepmother (Emma's mother). Upon learning this, Hal's father committed suicide by drowning himself in the family's swimming pool, and accidentally dragged Emma into the water in the process. She survived, but not without injury. Emma expected Hal to save her, but he wasn't aware that this was happening (as he was currently in bed with his stepmother).
After this, Emma developed a fear of water and became estranged from her stepbrother, blaming him for leaving the family after his father's death. She is escorted to the Shell 1 Core computer room by Raiden to download a virus into GW, but is ambushed by Vamp on the oil fence. Raiden snipes Vamp, but before falling into the sea, Vamp fatally stabs Emma in the back. She later dies in the computer room. She is named after the character Dr. E.E. Danziger from the novel Time and Again.
