#3 Ric Flair
The former 16-time WCW World Champion, re-signed with the WWF in November 2001 in a storyline where he became co-owner of the company with Vince McMahon.
In mid-2002 Flair returned to the ring and joined WWE's premier stable, Evolution with Triple H, Batista and Randy Orton. During his time in the group, Flair became Tag Team Champions with Batista as his partner.
Flair remarkably won the Intercontinental Championship in 2005, becoming the oldest Champion in WWE history at the age of 56 and as his career began to wind down embarked on a memorable farewell tour wherein his career would be over the next time he lost.
Culminating in an emotional match at Wrestlemania 24, the night after he was inducted into the WWE Hall of Fame, Flair lost to Shawn Michaels and retired from in-ring competition in WWE.
Tears were shed by Flair and the fans the following night on Raw as the company said it's goodbyes. The most beloved WCW legend was a much loved WWE performer also.