Name	Known for
Guy Williams Dr. John Robinson Dr. John Robinson See fewer	Zorro (1957)
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 (1998)
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)
Francine York Niolani Niolani See fewer	The Family Man (2000)
Dave Dunlap First Alien Guard (uncredited) First Alien Guard (uncredited) See fewer
Orwin C. Harvey Third Alien Guard (uncredited) Third Alien Guard (uncredited) See fewer	To Live and Die in L.A. (1985)
Seymour Konic Fourth Alien Guard (uncredited) Fourth Alien Guard (uncredited) See fewer
Bob May The Robot (uncredited) The Robot (uncredited) See fewer	The Red Skelton Hour (1951)
Erwin Niel Second Alien Guard (uncredited) Second Alien Guard (uncredited) See fewer
Dick Tufeld The Robot (voice) (uncredited) The Robot (voice) (uncredited) See fewer	Lost in Space (1998)