From the Journal of Test Subject #232: 31.21 N, 28.71 W. 2043 AD. It's hard to believe that just fifty years ago people were worried about the water levels rising. I joined the Testing Course Program just a week ago and they brought me to one of these island mountains. Ever since the Combine came they had been sucking up the water and sending it back to wherever they came from. So the water level fell so far that the underwater mountains became islands, then hills, and then finally towering mountains, jutting out of the water like some kind of massive wrecked ship. Then after the Combine were beaten away, this new Aperture corporation went around claiming all these mountains for research. Word was, they were extremely benevolent up until the founder died, and then they built this big robot lady to replace her. Then the tests got worse. The scientists around the place don't seem to know, and that seems odd. I'll just say I feel sorry for the next subject.
...
How convenient
Well, these aren't built for testing. GLaDOS' versions didn't have the processing power for actually making logical decisions, so the Mount Aperture people came, found them, and upgraded them. However, they ran out of resources and just started selling the dumb ones to the general public as robot servants basically.
Later they started questioning if they had souls and .... oh dagnit im in the wrong game.
>.>
They implant the souls of recently dead people in the robots. MUHAHAHA!!! No, not really. Just kidding...