Arriving in Motown as a 26th overall pick out of South Carolina State in 1992, Robert Porcher possessed raw athleticism and length that needed only time and technique to turn into pure backfield destruction. He quickly became the undisputed anchor of Detroit's defensive line, spending twelve seasons torturing opposing quarterbacks.

Porcher hit his stride in 1996 with an 8.5-sack campaign, launching a dominant six-year run as one of the NFC's premier edge threats. He recorded double-digit sacks in five seasons, highlighted by a career-best 15.0 sacks in 1999. Combining exceptional closing speed with powerful hand use, Porcher earned three Pro Bowl selections (1997, 1999, 2001) and three AP Second-Team All-Pro honors, regularly collapsing the pocket and anchoring front-seven defenses that reached the postseason five times during his tenure.

Although opposing quarterbacks dreaded facing him on Sundays, the Detroit community highly valued his contributions beyond football. He is a key philanthropist in the region, having established the Robert Porcher Man of Rush Foundation, which has raised hundreds of thousands of dollars for cancer research and youth initiatives. His relentless civic efforts have led to multiple nominations for the team's Walter Payton Man of the Year award.

When Porcher retired following the 2003 season, he hung up his cleats as a lifelong Lion, having accumulated 95.5 official career sacks—falling just 4.5 sacks shy of the century mark while establishing a franchise record that still stands today. In September 2025, his towering legacy was immortalized at Ford Field when the organization officially inducted him into the Pride of the Lions ring of honor.  He also had 602 tackles and 25 forced fumbles for the team.