His name should tell you what he's like. He is most famous for being the star of the Tex Avery cartoons, although there were only five of those made. He was later in Droopy: Master Detective.

The epitome of animated anti-cuteness, Tex Avery’s Screwball Squirrel was a raucous rodent who began his career by mugging the cartoon’s eye-batting li’l bunny-wunny narrator. The ascendant Screwy ...

In 1942, Looney Tunes and Merrie Melodies animator Tex Avery moved over to MGM studios and created a world of characters that redefined animated insanity. Wolf, Red Hot Riding Hood, Screwball Squirrel ...