Name	Known for
Guy Williams Dr. John Robinson (credit only) Dr. John Robinson (credit only) See fewer	Lost in Space (1965)
June Lockhart Maureen Robinson (credit only) Maureen Robinson (credit only) See fewer	Lost in Space (1965)
Mark Goddard Major Don West Major Don West See fewer	Lost in Space (1998)
Marta Kristen Judy Robinson (credit only) Judy Robinson (credit only) 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 (credit only) Penny Robinson (credit only) See fewer	The Sound of Music (1965)
Jonathan Harris Dr. Zachary Smith Dr. Zachary Smith See fewer	Lost in Space (1965)
Michael Conrad Creech Creech See fewer	Hill Street Blues (1981)
Tol Avery Warden Warden See fewer	Hawaiian Eye (1959)
Charles Horvath Guard #1 Guard #1 See fewer	His Majesty O'Keefe (1954)
John Hunt Monster #1 (uncredited) Monster #1 (uncredited) See fewer	Hawaii Five-O (1968)
Ralph Madlener Monster #2 (uncredited) Monster #2 (uncredited) See fewer
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)