Cobb's other appearances include the 1983 film "Uncommon Valor", in which he played a rare heroic role; the 1987 movie "Critical Condition", in which he plays a character in the psych ward who thinks he is a "brother" (an African American); "The Champ", which referred to his boxing career by casting Cobb as a boxer who fights the title character, Billy Flynn; and "Diggstown", in which he plays a prison inmate who fights at the behest of a con man. One of his more memorable roles is the menacing outlaw biker/bounty hunter Leonard Smalls in the 1987 Coen Brothers film "Raising Arizona". Joel Coen later described Cobb as difficult to work with: "he's less an actor than a force of nature".