R. Daneel Olivaw is a humaniform robot (android). The "R" initial in his name stands for "robot," a naming convention in Asimov's future society; all robot names start with the initial R to differentiate them from humans which they often resemble. He is a major character in the Robot series, as well as having important roles in the prequels and sequels to the original Foundation Trilogy. Built by Han Fastolfe, he was first assigned to help Elijah Baley solve the murder of his co-creator Roj Nemennuh Sarton, and later teams up with Baley for other detective work.
With R. Giskard Reventlov, a robot with unique telepathic powers, he develops the "Zeroth Law of Robotics," a modification of/addition to the original Three Laws of Robotics, and is given Giskard's powers shortly before Giskard shuts down. He reappears later in the Foundation saga novels.
Read more about this topic: List Of Isaac Asimov's Robot Series Characters
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