1. Walter Payton
Many will argue, to this day, whether or not Walter Payton is the greatest running back to ever play the game. Not only is he the greatest in the history of the Bears, but Payton is indeed the greatest to ever play in the NFL.
The easy rebuttal is the fact that Emmitt Smith broke Payton's all-time rushing record, but to that it's also simple to refute by stating the fact that Smith played in 36 more games than Payton did. What Payton embodied on the football field is something we rarely see anymore: fearlessness.
Payton was the type of running back who wouldn't run out of bounds. Even if it meant taking another hit, he would go for that extra yard, foot or even inch. He was the definition of the phrase "never give up."
Over his 13 years in Chicago, Payton ran for 16,726 yards and 110 touchdowns. He also added 4,538 receiving yards and 15 scores in that aspect of the game. For what it's worth, Payton ended with roughly 1,300 more receiving yards than Smith.
Not only that, but Payton also threw for eight touchdowns over his career. Not many remember that part of his game, but Payton even tossed three touchdowns back in the 1983 season.
Earning nine Pro Bowl nods and five All Pro selections, Payton goes down as one of the most decorated backs in league history, and is easily the Bears' best running back of all-time.