Most of the credits on the U.S. version are phony in order to hide the fact that the film was made in Russia.
This film is really Planeta bur (1962), dubbed into English. New, brief scenes with Basil Rathbone and Faith Domergue were shot and edited onto the Russian original.
The sound heard along with the robot's voice as he speaks is the same sound heard on the bridge of the USS Enterprise in Star Trek TOS.
Set in the year 2020.