With John Cena's retirement match in Washington, D.C., it was quite obvious that many big names would appear, from celebrities at ringside to some important legends from his career.The stage was all set for the final match of John Cena's career, where it was eventually confirmed that he would be closing the show. When the big names showed up, the first major legend we got an eye on was none other than Kurt Angle. The other legend was important to Cena's career for different reasons, but memorable nonetheless, and that was Mark Henry.Both WWE Hall of Famers have different reasons for being significant to John Cena's career. As many of you know, Kurt Angle was the first man Cena stood across from in their iconic exchange in 2002, where Cena was asked what qualities he had to stand in front of the very best in the business. This was when Cena responded with two defining words - Ruthless Aggression.In the case of Mark Henry, they had that iconic moment years ago when the World's Strongest Man wore his salmon pink jacket, which is now infamous for the fake retirement. While it looked like Henry was set to call it a day on his already-legendary career, he fooled everyone and took Cena out, marking the greatest fake retirement stunt in WWE history.When Kurt Angle got inducted into the WWE Hall of Fame over eight years ago in 2017, it was none other than Cena who had the honor of inducting him. Without Angle, there would very likely be no Cena, or at least his career trajectory may have gone very differently. Cena was still on the cusp of being fired months after his debut segment with Kurt Angle, but a fluke moment in a backstage tour bus saved his career.