In July 1998 he settled a libel suit he brought against noted film critic and historian Leonard Maltin, known for his annual guides on available movies and videos. In all guides from 1974-98, Maltin mistakenly listed Gray as a real-life drug addict and pusher in the critique of Dusty and Sweets McGee (1971); he appeared in the film only as an actor. Part of the settlement required that Maltin publicly apologize for the 27-year long defamation of character. He did so during a press conference on the morning of July 18, 1998.
Has been involved in the sport of speedway motorcycle Racing as a competitor from the '70s to the '90s. His bike was known as the "Orange Crate Special", then later as the "Orange Blossom Special"--the name was given to his bike by the announcer at Irwindale Raceway (CA due to the solid orange rims that Billy used on the bike.
Inventor of the F-1 guitar pick.
Son of Beatrice Gray.
His resemblance to Martin Sheen was exploited in the film short Porklips Now (1980), a parody of Apocalypse Now (1979), where he played the character of Health Inspector Will Dullard, based on Sheen's performance of Capt. Benjamin L. Willard.
Portrays Bryan Foy as a teen in The Seven Little Foys (1955).
Those who fondly recall him in the archetypal 1950s family sitcom Father Knows Best (1954) may be surprised to learn that when the series debuted in 1954, it did so poorly in the ratings that CBS canceled it in March of 1955. A flood of protests came from viewers insisting that the show be reinstated. It was moved to an earlier time, and it gradually became a hit.
Was just 12 years younger than Patricia Neal, who played his mother in The Day the Earth Stood Still (1951).
Profiled in the 2016 book "X Child Stars: Where Are They Now?" by Kathy Garver and Fred Ascher.