Determining the single most famous Chicago Cubs player of all time involves celebrating legendary icons who left an indelible mark on the franchise, with immortal figures like Ernie Banks, commonly known as Mr. Cub, standing out as the ultimate ambassador of the team. Playing his entire 19-year career on the North Side, Banks captured back-to-back National League Most Valuable Player awards and famously expressed his pure love for the game with his enduring catchphrase, "Let's play two." Other legendary players such as Ron Santo, Ryne Sandberg, and modern postseason heroes like Anthony Rizzo and Kris Bryant also command immense global recognition, but Ernie Banks remains the iconic heart and soul of Cubs history.