Marx Brothers "The Cocoanuts" (1925–1926) and "Animal Crackers" (1928–1929). Playwright George S. Kaufman worked on the last two and helped sharpen the brothers' characterizations. Out of their distinctive costumes, the brothers looked alike, even down to their receding hairlines. Zeppo could pass for a younger Groucho, and played the role of his son in "Horse Feathers". A scene in "Duck Soup" finds Groucho, Harpo, and Chico all appearing in the famous greasepaint eyebrows, mustache, and round glasses while wearing nightcaps. The three are indistinguishable, enabling them to carry off the "mirror scene" perfectly. The stage names of the brothers (except Zeppo) were
Chico Marx his fly until he was seventy." Chico's lifelong gambling addiction compelled him to continue in show business long after his brothers had retired in comfort from their Hollywood income, and in the early 1940s he found himself playing in the same small, cheap halls in which he had begun his career 30 years earlier. The Marx Brothers' penultimate film, "A Night in Casablanca" (1946), was made for Chico's benefit since he had filed for bankruptcy a few years prior. Because of his out-of-control gambling, the brothers finally took the money as he earned it and put him on an allowance,