You could argue that Bart Gunn really got the shaft by the WWE and as such you forget that he had a decent run.  He entered the WWE with his kayfabe brother, Billy, and they would win the World Tag Team Championship three times.  When the team broke-up they saw more money in Billy and eventually (albeit in another tag team), he became the much bigger star when he was in the New Age Outlaws and finally D-Generation X.