It did not have a name, except in insults from Dr Smith, e.g., 'You bubble-headed booby' etc.
Robby and Robert are familiar monikers for Robots- in Forbidden Planet and Steve Canyon, for example, but accurately the Lost In Space robot did not have a name. Tobor is another common handle for Robots as it is the word spelled backwards.
The robot did not have a name, just an identifier, B9.
Robby the Robot is from Forbidden Planet. The same man created them both.
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The robot's name is simply "Robot" or "The Robot" on the TV show Lost in Space.
The robot's name in the series Lost in Space is simply "Robot." Its full name is Robot B-9.
The robot in the movie "Lost in Space" is named Robot.
The robot did not have a proper name .
Jupiter 2's B-9, but it is referred to as just "Robot".