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Gaben
@gabenvalve
President and co-founder of Valve Inc.
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Test Subject 29
@test-subject-29
Portal is one of the only games I don't suck at.
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Aperture Science PR Department
@aperturescience
Welcome to Aperture Science. Follow for the latest news in Aperture technology. Thank you to @randomcuts for the profile picture and banner.
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Black Mesa PR Department
@black-mesa-pr
This is the offical Black Mesa PR Department, based in Roswell, New Mexico. Don't mess with the science team and screw Apeture Science.
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