Tex Avery [Fred Avery] (1907–1980), U.S. animator. Bugs Bunny's running gag, in Looney Tunes/Merrie Melodies (animation series), Warner Brothers cartoon (1938-1964).
The rabbit made his first appearance in a Warner Brothers' Looney Tunes cartoon in 1937, voiced by Mel Blanc. In 1940 Tex Avery gave him his name (after West Coast mobster Bugsy Siegel) and his famous catchphrase, and directed the first official Bugs Bunny cartoon, A Wild Hare (1940). "What's Up Doc?" Was also the title of Peter Bogdanovich's 1972 screwball comedy with Barbra Streisand and Ryan O'Neal.