With terrific speed and great open-field tackling ability, Briggs charging at full speed was a nightmare for opposing running backs.

Since coming to Chicago, Hicks has developed into a dominant defender. He had 9.5 sacks in 61 career games playing for other teams, compared to 14 sacks in 24 games with the Bears.

The 1990 Defensive Rookie of the Year was a ballhawk, finishing with 10 interceptions that season, but also infamous for the huge hits he'd lay on receivers coming across the middle.

Though he was known as a top tackler, opposing quarterbacks say that Singletary's big eyes starting at them across the line were scarier than anything.

Not too many guys have a move named after them, but after forcing 42 fumbles as a Bear, Tillman's 'Peanut Punch' became a scary sight for opposing ballcarriers.

Nobody on the famed '85 Bears defense hit harder than Marshall, who flattened several quarterbacks en route to a Super Bowl XX title.

Dent terrified opposing quarterbacks with his speed and ferociousness coming off the edge, recording at least 8.5 sacks in 11 of his 12 seasons with the Bears.

Nobody covered the field sideline-to-sideline better than Urlacher, who could chase down mobile quarterbacks on the edge and stuff physical runners at the line.

There's a reason Hampton was known as 'Danimal.' He used to abuse opposing blockers and cause plenty of havoc in the backfield.

Perhaps no defender in the history of the NFL was feared more than Butkus, who destroyed ballcarriers, crushed quarterbacks and punished anyone else in his path.