Guy Williams Prof. John Robinson Actor June Lockhart Maureen Robinson Actor Mark Goddard Don West Actor Marta Kristen Judy Robinson Actor Bill Mumy Will Robinson Actor Angela Cartwright Penny Robinson Actor Jonathan Harris Dr. Zachary Smith Actor Dick Tufeld Robot Actor Jim Mills Saticon 1 Guest Star Dee Hartford Verda Guest Star Vitina Marcus Lorelei Guest Star Tiger Joe Marsh Elevator operator Guest Star Allan Melvin Little Joe, Gambling machine voice Guest Star Jim Boles Smeek Guest Star Gregory Morton Judge Iko Guest Star Fritz Feld Mr. Zumdish Guest Star Dawson Palmer The Cosmic Monster Guest Star Ronald Weber Gromack Guest Star Lane Bradford Barfly Guest Star Eddie Quillan Bartender Guest Star Irwin Allen Producer Barney Slater Writer Peter Packer Writer Bob Duncan Writer Carey Wilbur Writer Carey Wilber Writer William Read Woodfield Writer Jackson Gillis Writer Michael Fessier Writer Margaret Brookman Hill Writer Nathan Juran Director Wanda Duncan Writer Ezra Stone Director Allan Balter Writer Jus Addiss Director S. Robbie Director Don Richardson Director Harry Harris Director Robert Douglas Director