Updated: September 10, 2024

Two versions of the robot were used during Lost in Space filming a "hero robot" costume worn by Bob May, and a static, "stunt robot" prop that was used for distant or hazardous shots. Both versions fell into disrepair after the series, but these have since been discovered and restored. The "hero" is privately owned by TV and film producer Kevin Burns, who commissioned a replica in the early 1990's for touring and conventions. The "stunt robot" is in storage at the Science Fiction Museum and Hall of Fame in Seattle, Washington.

Like Robby the Robot, the B9 Robot prop costume was re-used on at least one other show. On the Saturday morning children's show Mystery Island, it was modified to make the primary character "P.O.P.S." There it had different domes, different color scheme, and an added rectangular skirt of gold-colored tubes, covering the rubber bellows legs and base.