Ray Nitschke
Nitschke was there for the essential conception of modern football. As the Super Bowl I, and II champions, Nitschke worked closely with Vince Lombardi and the rest of the Packers to help build the essential formula for traditional defense. Additionally, Ray won the 1962 Championship Game MVP award, was a 7-time All-Pro recipient, and was an NFL champion 5 times (thanks, Lombardi). Nitschke was inducted into the hall of fame in 1978.
Brian Urlacher
Urlacher might just be the most famous Bears player to ever put on the jersey. From 2000-12, Brian Urlacher amassed 1,353 tackles, 41.5 sacks, and 34 turnovers. He was named Defensive Player of the Year in 2005, after receiving the Rookie of the Year award in 2000. He was inducted into the pro football hall of fame in 2018.