GLaDOS

GLaDOS is a fictional character in the video game series Portal, created by Erik Wolpaw and Kim Swift, and voiced by Ellen McLain. GLaDOS is depicted in the first game as an artificially superintelligent computer system responsible for testing and maintenance in the Aperture Science Computer-Aided Enrichment Center in all titles. After betraying and almost killing the protagonist Chell, GLaDOS is revealed to be responsible for the desertion of the Enrichment Center after going rogue and killing the scientists who created her, before being defeated in a final boss fight. She is revived in Portal 2, but then disabled by Wheatley, who takes control from her over the facility and betrays Chell, forcing GLaDOS to join forces with the latter after being forcibly downloaded onto a potato battery nicknamed PotatOS. Recordings by Cave Johnson reveal GLaDOS to have been forcibly digitized from a human woman named Caroline.