Lloyd Bochner as Michael Chambers Richard Kiel as Kanamit (also playing all of the other Kanamits) Susan Cummings as Patty Joseph Ruskin as Kanamit voice Hardie Albright as Secretary General Theo Marcuse as Citizen Gregori (credited as Theodore Marcuse) Bartlett Robinson as Colonel # 1 Carleton Young as Colonel # 2 (credited as Carlton Young) Nelson Olmsted as Scientist Robert Tafur as Señor Valdes Lomax Study as Leveque Jerry Fujikawa as Japanese Delegate (credited as J.H. Fujikawa)
who played the kanamit in the twilight zone
Richard Kiel