Bob May (September 4, 1939 - January 18, 2009) played the Robot on Lost in Space. He also appeared as Adolf Hitler in The Time Tunnel episode The Kidnappers (uncredited). He also may have played the voice of Zalto's Dummy in the Lost in Space episode Rocket to Earth. Joe E. Tata is listed on IMDB, however Bob May is said to have played the role in an interview on LIS Memories.