#6: Gets Nickname “Groucho” (1914)
In 1914, Julius picked up the nickname “Groucho,” reportedly from a fellow performer noting his grumpy facial expressions. The name stuck in vaudeville circles and would soon define the stage persona he adopted. During this time, he continued performing with his brothers in New York theaters and clubs. The nickname gave audiences a handle for his character, helping to separate him from the group identity while still being part of the Marx Brothers ensemble.

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