On August 2, 2001, Guy was incorporated in the Hollywood Walk of Fame, at 7080 Hollywood Blvd (La Brea's corner).
Guy was interviewed for the part of Diego de la Vega/Zorro by Walt Disney himself.
His father died in 1951.
Guy attended Peeskill Military Academy.
He weighed about 190 lbs.
Guy guest starred in 5 episodes of Bonanza as 'Will Cartwright'.
John Robinson, (Guy's character on Lost in Space), was ranked #38 in TV Guide's list of the "50 Greatest TV Dads of All Time" (June 20, 2004 issue).
Guy had two children: Steven and Toni Catalano.
Guy's ashes were scattered in the Pacific Ocean off the coast of Malibu, California.