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While Groucho, Harpo, and Chico's characters translated easily to the cinematic medium, Zeppo Marx's straight-man persona did not fare so well. Audiences didn't respond to Zeppo's light touch, preferring the more slapstick comedy of Groucho, Chico, and Harpo, and Zeppo grew bored with the role. After the success of ''Duck Soup'', Zeppo left the act for good.

While Groucho, Harpo, and Chico's characters translated easily to the cinematic medium, Zeppo Marx's straight-man persona did not fare so well. Audiences didn't respond to Zeppo's light touch, preferring the more slapstick comedy of Groucho, Chico, and Harpo, and Zeppo grew bored with the role. After the success of ''Duck Soup'', Zeppo left the act for good.

The three Marx Brothers made a few more films with MGM, such as ''A Night at the Opera'' and ''A Day at the Races'', but the quality of their work began to falter, and the act was essentially defunct by the 1950s. The brothers made one last appearance together in film with cameos in Irwin Allen's ''The Story of Mankind''.

The three Marx Brothers made a few more films with MGM, such as ''A Night at the Opera'' and ''A Day at the Races'', but the quality of their work began to falter, and the act was essentially defunct by the 1950s. The brothers made one last appearance together on film with cameos in Irwin Allen's ''The Story of Mankind''.

==Filmography==

==Filmography==