#3 Scott Hall
After some forgettable runs with WCW, the NWA, and AWA, Scott Hall debuted for WWE in 1992 as Razor Ramon, a character inspired by the 1980 classic film, Scarface.
Scott was only with WWE for a few months before receiving a shot at Bret Hart for the WWE Championship at the 1993 Royal Rumble. Although he lost, he gave a commendable performance. Scott was actually a last-minute replacement for the recently departed Ultimate Warrior, and thus there were no main event level plans for 'The Bad Guy', at the time.
Scott would wrestle in the Intercontinental Championship ranks for the majority of his run, which included being the first four-time Champion in the title's history, as well as having two of the 90's best matches, two Ladder matches with Shawn Michaels at WrestleMania X and SummerSlam 1995.
Scott would then join WCW and form the NWO. During his four years with WCW, Scott had a lot of creative control over his booking, so it is pretty surprising that he never held the WCW Championship at any point during this run. He was always featured in the main event scene and did challenge for the WCW Championship on occasions, but only when it was held by someone outside of the NWO, which wasn't very often.
After a brief return to WWE in 2002, Scott joined TNA when they first debuted, and unsuccessfully pursued the NWA World Championship. Many believe Scott may have eventually won the NWA World title in 2002/2003, had he been able to agree on a deal with TNA.