The development of Elizabeth was a massive undertaking by Irrational Games, involving four key women to bring her to life:

: The team used hand-keyed animations and exaggerated facial features (inspired by Disney and Pixar) so players could read her emotions from a distance. Innovative Animation & AI

: Heather Gordon performed the motion capture, ensuring Elizabeth had fluid, human-like movements.

: Unlike typical "escort mission" characters, Elizabeth is helpful, finding ammo, health, and money for the player.