Cave Johnson/zh-hant

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Cave Johnson is the founder of Aperture Science, which evolved from its precursor, Aperture Fixtures and later Aperture Science Innovators. Cave Johnson first appeared by initials in one of the [[Media:Portal_Ratman_scrawling.png|Rattmann's dens]] during Portal, and was fleshed out and provided with additional details during the Portal ARG.

In Portal 2, Cave Johnson became a prominent character through a variety of automated audio recordings from the late 1940s to as late as sometime in the 1980s.

Cave Johnson is voiced by American actor.

Shower curtains
In 1953, Cave Johnson created Aperture Fixtures, a shower curtain manufacturer. The precursor to Aperture Science, he selected the name because it 'makes the curtains sound more hygienic'. He became a billionaire after winning contracts to manufacture shower curtains for all branches of the U.S. Military except the Navy.

Aperture Science Innovators
During his career in science, he called upon the wealthy and powerful to join his cause for the future of science. He also employed top scientists and other staff who were dedicated to the field, such as Caroline, and those lacking common sense for the dangers inherent in scientific experimentation.

Aperture
At the time of its creation, Aperture Science Innovations had developed a prototype to the modern Handheld Portal Device Chell wields.

Aperture Laboratories
At some point during the 1980s, Cave Johnson had renamed the company to Aperture Laboratories, a name that would be known far into the future. However, the number of willing test subjects had dwindled over the years, and out of desperation, employees and random strangers were pulled off the streets in order to be a part of the testing. The technology had advanced greatly, and robots had started to replace human employees. These employees then become unfortunate victims in Cave's quest for the future of science.

Portal
During Portal, there are several "Rattmann Dens" that are scattered throughout the facility. In one of them, there are several pictures of a suited man with a small picture of a Companion Cube over his face, along with the words "Our Founder" found in one of the photos. .

First Portal 2 ARG
Additional details about Portal 2 background were provided by the first Portal 2 ARG in March 2010. On those notes, Cave Johnson's life, as well as Aperture history, look much different than in Portal, foreseeing the ret-conned Aperture history showcased in Portal 2:

Perpetual Testing Initiative
During the events of the Perpetual Testing Initiative, Cave Johnson resume(s) his place as the head of Aperture Science

Trivia

 * During early stage of development, Cave Johnson was planned to be the player's sidekick, taking the form of an AI. As the story progressed, he would lose his touch with humanity and eventually try to become a full robot, leading to a robot uprising. Cave would confront the player for their "committed crimes against their brothers-in-arms" and become the game's main antagonist.
 * The 1950s portrait of Cave Johnson bears strong resemblance to a photo of Walt Disney.
 * Valve Lead Animator Bill Fletcher was the inspiration for the appearance of Cave Johnson.
 * Valve Lead Animator Bill Fletcher was the inspiration for the appearance of Cave Johnson.