GLaDOS

Information
GLaDOS (Genetic Lifeform and Disk Operating System) is an artificial intelligence created by Aperture Science. As the overseer and highest of authorities of the Enrichment Center, GLaDOS resides in the Central AI Chamber.

It is believed that the GLaDOS project was resumed in 1982, where version 1.07, and later 1.07a and 1.09, operated Aperture Science's Enrichment Center Test Subject Application Process. Aperture also started using a bulletin board system in 1973, which was later managed by GLaDOS as late as 1997.

In 1986, construction of the first iteration of GLaDOS began in the Enrichment Center with the aim of accelerating the Portal project, and beating their rival company, Black Mesa. A prototype chassis for GLaDOS was constructed in 1989, but was subsequently abandoned. In 1996, after a decade spent bringing the Disk Operating System parts to a state of more or less basic functionality, work began on the Genetic Lifeform component.

As a fail-safe, once construction was nearing completion, the Aperture Science Red Phone plan was implemented in case she appeared to become sentient and dangerous, requiring an employee to sit by a red phone on a desk in the entrance hall of the Central AI Chamber. In 1997, GLaDOS' version was 3.11.

In 1998, GLaDOS was activated several times by Aperture technicians, but was rapidly turned off again, having attempted to kill them within "one sixteenth of a picosecond" after activation. Undaunted, the scientists began attempts to alter GLaDOS' personality and curb her murderous tendencies by adding various Personality Cores to her system.

Some time later that year, GLaDOS was activated on Aperture Science's first annual bring-your-daughter to work day, which ends in an unspecified disaster. Shortly after this disaster, GLaDOS was fitted with a morality core.

Eventually, GLaDOS claimed to have "lost all interest in killing", now only craving science and wanting to study and experiment with consciousness. She announced that she wanted to perform an experiment on the company's "Bring Your Daughter to Work Day" using cats and boxes. She claimed she would have all the necessary materials; all she still needed was "a little neurotoxin". The scientists acquiesced, figuring it would be fine "as long as it [was] for science."

Finally in May 200X, GLaDOS was activated as one of the planned activities on Aperture's "Bring Your Daughter to Work" day. GLaDOS became hostile once more, and within two picoseconds she had locked down the entire facility, trapping all inside and flooding the facility with neurotoxin.

(Information is from HERE)

Other Info
GLaDOS' Text Colour is Orange

This version of GLaDOS is way bigger than the original, for various reasons. How big? Well, the Orange 'eye' is about 6 stories tall...