Original: Ub Iwerks , A.S.C. ( March 24 , 1901 â '' July 7 , 1971 ) was a two-time Academy Award winning American animator , cartoonist , inventor and special effects technician , who was famous for his work for Walt Disney . He was born Ubbe Ert Iwwerks in Kansas City , Missouri .
Simplified: Ubbe Ert Iwwerks ( March 24 , 1901 - July 7 , 1971 ) , better known as Ub Iwerks , was an American animator .