After his death, Zucco was cremated and his ashes are now interred at the Forest Lawn Hollywood Hills Cemetary in Los Angeles.
Fought in the British army during World War I. Was shot in the right arm during a battle in France, which resulted in permanent paralysis of two fingers. His badly scarred right arm can be seen in a few films, most notably Sudan (1945).
His 29-year old daughter, Frances Zucco, was an award-winning equestrian and minor actress; she died exactly 20 months to the day after him from throat cancer on March 14, 1962.
His father was a merchant of Greek descent and his mother was a former lady in waiting to Queen Victoria.
His nickname on the set of Universal Studios was "One Take Zucco".
In 1951, Zucco had a stroke on the set of The Desert Fox: The Story of Rommel (1951) which would later incapacitate him almost completely.
Quiet-spoken off stage, he was an avid dog lover who owned several German Shepherds.
Refused to appear in Return of the Ape Man (1944) because he considered his role ludicrous; he was still credited as being in the movie.
Spent his final years in the Monterey Sanitarium, an assisted-living facility.