John Larroquette
Self

Mark Goddard
Self (also archive footage)

Angela Cartwright
Self (also archive footage)

Jonathan Harris
Self (also archive footage)

William Hurt
Self (also archive footage)

Marta Kristen
Judy Robinson (archive footage)

Matt LeBlanc
Self (also archive footage)

June Lockhart
Self (also archive footage)

Bob May
Self (also archive footage)

Bill Mumy
Self (also archive footage)

Gary Oldman
Self (also archive footage)

Michael Rennie
The Keeper (archive footage)

Mimi Rogers
Self (also archive footage)

Kurt Russell
Quano (archive footage)

Dick Tufeld
Self - Robot (voice) (also archive footage)

Guy Williams
Professor John Robinson (archive footage)