Please note that this
may include spoilers for the games Portal and/or Portal
2.
Aperture Science is a scientific research company founded by Cave
Johnson. It was once called "Aperture Fixtures" but then named "Aperture Science Innovators" to make the shower company more hygienic. The company was actually focused more on science. Long story
short, In 1998, the robot, GLaDOS, was turned on during the holiday, "Bring your daughter to
work day". Unfortunately, GLaDOS became self-aware and filled the Enrichment Centre with neurotoxin, killing the scientists. Aperture Science was closed and turned into testing area, run by GLaDOS.