Marlon Brando took possession of Cox's ashes from his widow in order to scatter them at sea but actually kept them hidden in a closet at his house and frequently talked to them. The Los Angeles Times on September 22, 2004, quoted Brando's son, Miko, to the effect that both his father's and Cox's ashes were scattered at the same time in Death Valley, California, following Brando's death.
Biography in: "Who's Who in Comedy" by Ronald L. Smith, pg. 122-123. New York: Facts on File, 1992. ISBN 0816023387
Childhood friend and sometime roommate of Marlon Brando Upon his death, Brando was chosen to spread Cox's cremated ashes.
Despite his slight, timid features, his real-life hobby was motorcycle riding.
For over six years (1966-1973), he was the upper left square on "The Hollywood Squares" (1965) game show.
Invoked Tyrone Power's name in an underwear commercial saying, in his best, Mr. Milquetoast voice, "I may look like Wally Cox, but, inside, I'm Tyrone Power".
Once appeared in a TV commercial for men's underwear in the 1960s, but Standards and Practices, at the time, banned the commercial from broadcast. The offending material was Wally opening his dress shirt to reveal a small segment of his undershirt. This was considered "exposing underwear on a live model" and the commercial never aired.
Prestigious publisher Simon & Shuster published two of his whimsical books, "My Life As A Small Boy" (1961) and "Ralph Makes Good" (1965).
Provided the voice role for the animated superhero Underdog on "Underdog" (1964).
Studied with Stella Adler in the 1940s in New York and became roommates for a time with Marlon Brando. Cox moved out reportedly because he couldn't stand Brando's pet raccoon. The unlikely pair, however, remained lifelong friends.
Was a childhood friend of Marlon Brando. The young Brando once tied the young Cox to a fence and left him in bondage overnight. They later met again in New York City in the 1940s and became best friends, a friendship that lasted until Cox's death.
Was the television spokesman for Canada Dry's Sport Cola circa 1970.
Wrote a mystery novel for children, "The Tenth Life of Osiris Oakes," about a young boy who steals a mummified cat from a museum, only to have it come back to life.