Do Androids Dream of Electric Sheep?
The Rosen Association, whose headquarters are in Seattle, built Nexus-6 androids. While on Mars, six androids violently went rogue. They fled Mars for Earth. Rick Deckard, a bounty hunter, is assigned a mission to “retire” the rogue androids. It leads him to visit the Rosen headquarters to confirm the validity of a question-and-answer empathy test: the typical method for identifying any androids posing as humans. Deckard is greeted by Rachael Rosen, who quickly fails his test. Rachael herself attempts to bribe Deckard into silence, but he verifies that she is indeed a Nexus-6 model used by Rosen to attempt to discredit the test.
"More human than human"—Company's motto
In the film adaption, Blade Runner, the Tyrell Corporation made the Nexus-6 androids. Tyrell is headquartered by two large, pyramid-like structures that lie on the outskirts of Los Angeles. Elevators run along the outside of the massive structures, which both are at least 800 stories high. It’s notable that in the film, the only time the Sun is seen, is in the Tyrell Corporation's building, when Deckard is interrogating Rachael with a Voight-Kampff machine.
- Wikipedia, Do Androids Dream of Electric Sheep?