Early Disney animator and cartoonist who drew the first images of Mickey Mouse; winner of two Academy Awards. Also famous for his Flip the Frog character that was produced through his short-lived Iwerks Studio.
He created the Academy Award-nominated special effects for Alfred Hitchcock's horror film "The Birds" from 1963.
He was the father of Disney legend Don Iwerks and the grandfather of documentary film producer Leslie Iwerks.
He collaborated with Bob Clampett on two "Looney Tunes" cartoons while under contract with Leon Schlesinger Productions in 1937.