Burton Hill "Burt" Mustin (February 8, 1882 – January 28, 1977) was an American character actor. Over the course of his career, Mustin appeared in over 150 film and television productions. He also worked in radio and appeared in stage productions.
Wally Cox Actor. He is best remembered for his role of 'Robinson Peepers' in television sitcom "Mr. Peepers" (1952 to 1957), and for his voice characterization of the animated superhero, 'Underdog',1924-1973