After spending two seasons as an illustration, Mr. Met made his major league debut in April 1964, and quickly became a sensation: as the first live-action mascot of the modern era (sorry, San Diego Chicken) he not only revolutionized the game of baseball, but gave Mets fans something to cheer about during those lousy early seasons.\r\nMuch like the franchise he represents, Mr. Met's experienced tremendous highs and crushing lows in the four decades since. He met his life partner, Mrs. Met, had three children, and rose to the top of his profession. But for nearly 20 years, he was benched by the team, disappearing from games and promotional material. The Mets even briefly replaced him with a mule.\r\nThrough it all, Mr. Met kept smiling, and due to popular demand, he made his triumphant return to MLB in the mid-nineties. Since then, he's become a cult icon and (quite possibly) the most popular non-athlete in baseball. Though he's not one to rest on his laurels...as Rolling Stone discovered when we spent a day with the hardest-working mascot in the bigs.