EDI is an AI entity who first appears in "Mass Effect 2" as the "Normandy" SR-2's artificial intelligence and speaks with an aurally feminine voice. Her name stands for "Enhanced Defense Intelligence", and is visually represented on the "Normandy" by a holographic blue sphere. For "Mass Effect 3", the developers wanted to give EDI a body that is "sexy, chrome, and robotic", akin to the Maria character, also known as the Maschinenmensch, from Metropolis. EDI's facial and body design went through multiple iterations, which includes an eyeless visage, and partially completed 3-D models which differ from the EDI's appearance in terms of body shape, the split between solid and transparent surfaces, and finer points of her two-tone appearance. After some discussion about how robotic would the extent of her appearance be, the team decided that the body she would come to possess is an infiltration unit, which once had skin over its metal frame and is capable of the same facial effects as a living human being to avoid being easily spotted.