Bill (also called Bob-3) is the second 2nd generation replicant of Robert Johansson, created by the 1st generation replicant Bob in the Epsilon Eridani solar system.

He is the only 2nd generation replicant who stays in the Epsilon Eridani system, mainly to produce replicants and to advance the science used in probe engineering.

Sets up a Skunk Works in the system and acts as the central clearing house for news and information.

He is named after the 'Bill the Cat' character in the Bloom County comic strip.