

The physical appearance of GLaDOS went through several designs, one of which featured a large disk below her. While the game was initially designed with other characters, they were later removed, leaving GLaDOS as the only character players encounter. Play testers were motivated to complete tests in the game due to her guidance. GLaDOS was originally intended to be present solely in the first area of Portal she was well received by other designers and her role was expanded as a result. Other game developers working on Psychonauts found the lines funnier as a result of the synthesized voice. The inspiration for the character's creation extends from Wolpaw's use of a text-to-speech program while writing lines for the video game Psychonauts. She is apparently destroyed at the end of the first game but returns in the sequel, in which she is supplanted by her former intelligence dampener and temporarily stuck on a potato battery, while her past as the human Caroline is also explored.

The second game, as well as the Valve-created comic Lab Rat, reveals that she was mistreated by the scientists and used a neurotoxin to kill the scientists in the laboratory before the events of the first Portal. While GLaDOS initially appears in the first game to simply be a voice that guides the player, her words and actions become increasingly malicious as she makes her intentions clear. GLaDOS is depicted in the series as an artificially superintelligent computer system responsible for testing and maintenance in the Aperture Science Computer-Aided Enrichment Center in all titles. The character was created by Erik Wolpaw and Kim Swift and voiced by Ellen McLain. GLaDOS (Genetic Lifeform and Disk Operating System) is a fictional character from the video game series Portal. Wheatley (intelligence dampener formerly) Genetic Lifeform and Disk Operating System (designation)Īrtificial intelligence (failed copy of human consciousness).
