Jack O'Shea on AllMovie

Born two weeks before the great San Francisco earthquake, Jack O'Shea held down a variety of jobs before entering films in 1938. Nearly always cast as swarthy, mustachioed Western villains, he more than earned his billing as "Black Jack O'Shea" and "the Man You Love to Hate." An able stunt man, he doubled for such stocky performers as Lou Costello, Leo Carrillo, and Orson Welles. Retiring from films in the mid-'50s, Jack O'Shea kept busy as the proprietor of an antique shop in Paradiso, CA, where he briefly served as honorary mayor (given his unsavory screen image, one wonders if he fixed the election).