Name	Known for
Guy Williams Dr. John Robinson Dr. John Robinson See fewer	Lost in Space (1965)
June Lockhart Maureen Robinson Maureen Robinson See fewer	Lost in Space (1965)
Mark Goddard Major Don West Major Don West See fewer	Lost in Space (1998)
Marta Kristen Judy Robinson Judy Robinson See fewer	Lost in Space (1965)
Bill Mumy Will Robinson (as Billy Mumy) Will Robinson (as Billy Mumy) See fewer	Babylon 5 (1993)
Angela Cartwright Penny Robinson Penny Robinson See fewer	The Sound of Music (1965)
Jonathan Harris Dr. Zachary Smith Dr. Zachary Smith See fewer	Lost in Space (1965)
Fritz Feld Mr. Zumdish Mr. Zumdish See fewer	Bringing Up Baby (1938)
Richard Krisher MXR MXR See fewer	The Boston Strangler (1968)
Eric Matthews QZW QZW See fewer	Voyage to the Bottom of the Sea (1964)
Edy Williams Non Non See fewer	Beyond the Valley of the Dolls (1970)
Carroll Roebke Tat Tat See fewer	Lost in Space (1965)
Bob May The Robot (uncredited) The Robot (uncredited) See fewer	The Red Skelton Hour (1951)
Dick Tufeld The Robot (voice) (uncredited) The Robot (voice) (uncredited) See fewer	Lost in Space (1998)