What was the robots name on Lost in Space?

Question

For years I have been asking this question, and nobody has given me the correct answer. What was the robots name on Lost in Space?

Answer 1

There was only one robot and he was called.....Robot!

Answer 2

I Have No Clue

Answer 3

Other than the names Dr. Smith gave it, the robots technical designation was  Model B-9, Class M-3 General Utility Non-Theorizing Environmental Control Robot.  

Answer 4

his name was Robot. Dr smith had several titles for him but they were un-official.