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George Nader (October 19, 1921 – February 4, 2002) was an American film and television actor. He appeared in a variety of films from 1950 through 1974, including Phone Call from a Stranger (1952), Congo Crossing (1956), and The Female Animal (1958). During this period, he also did episodic television and starred in several series, including the unique NBC adventure offering, The Man and the Challenge (1959–60). However, his best-remembered role may have been as "Roy", the hero who saves the world from the clutches of "Ro-man" in the low-budget 3-D sci-fi film Robot Monster (1953).