Popeye, the popular cartoon character who turns from sailor to strongman with a few swallows of spinach, started out as a minor character in the Thimble Theater comic strip. In its early days, the strip starred Olive Oyl and her boyfriend, Ham Gravy. However, after cartoonist E.C. Segar introduced Popeye, he became so popular that his role was expanded, and he soon replaced Ham as Olive's love interest, going on adventures with her brother, Castor Oyl, and facing what nemesis? Discuss (http://forum.thefreedictionary.com/postst23954_Popeye-Makes-His-Debut-in-the--i-Thimble-Theater--i--Comic-Strip--1929-.aspx)
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