13. “Mean” Joe Greene, Steelers, 1969-81
Charles Edward Greene, better known as “Mean” Joe Greene, is widely considered one of the greatest defensive linemen in NFL history. Greene was the centerpiece of the “Steel Curtain” defense that led Pittsburgh to four Super Bowl championships in a six-year span. He was known for his leadership, fierce competitiveness, and intimidating style of play for which he earned his nickname. Standing 6-foot-4 and weighing 280 pounds, Greene was able to overpower opposing linemen with ease and completely disrupt the offense’s game plan. Besides his team success, Greene has an impressive list of individual awards: 2x Defense Player of the Year, 6x All-Pro, 10x Pro Bowl selection. The case for Greene earning a spot on this list was pretty strong — he was the best player on one of the best defenses in NFL history.