William H. "Bill" Thompson (July 8, 1913 – July 15, 1971) was an American radio comedian and voice actor whose career stretched from the 1930s until his death. He was best known as a featured comedian playing multiple roles on the Fibber McGee and Molly radio series, and as the voice of Droopy in most of the Metro-Goldwyn-Mayer theatrical cartoons from 1943 to 1958. Born to vaudevillian parents, Thompson began his career in Chicago radio, where his early appearances included appearances as a regular on Don McNeill's morning variety series The Breakfast Club in 1934 and a stint as a choir member on the musical variety series The Sinclair Weiner Minstrels around 1937. While on the former series, Thompson originated a meek, mush-mouthed character occasionally referred to in publicity as Mr. Wimple. Thompson soon achieved his greatest fame after he joined the cast of the radio comedy Fibber McGee and Molly around 1936. On Fibber McGee and Molly, Thompson brought back the Wimple voice in 1941, and essayed a variety of roles, including a boisterous conman with a W. C. Fields voice, originally named Widdicomb Blotto but soon re-christened Horatio K. Boomer, and Nick Depopulis, the Greek restaurant owner. His two most famous roles on the series, however, were as the Old Timer and Wallace Wimple. The Old Timer, introduced in 1937 was a garrulous old gent who dropped in and listened to McGee's rambling stories and jokes. He inexplicably referred to McGee as "Johnny", as in: "That's pretty good, Johnny, but that ain't the way I heerd it!" This soon became a national catchphrase and surfaced in Warner Bros. cartoon shorts, notably Tortoise Wins by a Hare in which Bugs Bunny disguises himself as a bearded old man and tries to trick the tortoise into telling him "how he beat that wabbit!") Thompson's final role was as Uncle Waldo in The Aristocats, released shortly before his sudden death from septic shock on July 15, 1971, just a week after his 58th birthday. His wife, Mary Margaret McBride, was the daughter of cartoonist Clifford McBride and not the Mary Margaret McBride of radio fame, who was unmarried and lived in New York, while Thompson was on the West Coast. Thompson received a star on the Hollywood Walk of Fame for his work in radio, February 8, 1960.

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