Kip James / Billy Gunn
Billy Gunn started out in the WWF wrestling with his brother, Bart Gunn, as the Smoking Gunns. They were Texas cowboys, winning the tag team championships three different times. They were managed by Sunny for a while.
After Bart got an injury, Billy went on to singles competition. He came back as Rockabilly, and at an In Your House, he faced his future partner, the Road Dogg (then known as the Roadie, Jeff Jarret's companion). As Rockabilly, he was managed by former Intercontinental Champion the Honky Tonk Man. The two fizzled out and he came back as Billy Gunn.
He then teamed up with the Road Dogg and formed the team called the New Age Outlaws. He won three tag team championships with this partner (he holds the record for the most tag team championships won by a person). They joined D-Generation X the day after WrestleMania XIV.
Early in 1999, the team started to compete individually, with Billy Gunn winning the WWF Hardcore Championship and competing for the WWF Intercontinental Championship at WrestleMania XV. They went back together as a tag team and became champions again.
Billy Gunn suffered an injury and has been sidelined for several months. He has since returned under a new nickname of The One Billy Gunn with a whole new attitude. When the draft of 2002 took place, he ended up on Smackdown! with his tag team partner Chuck. The two decided to have a commitment ceremony (a sort of marriage) on an episode of Smackdown!, but it never went through. The two had won the WWE Smackdown! Tag Team Championship, but split up.
Billy Gunn has left the WWE and has been seen wrestling in TNA under the name of Kip James, relation of B G James. The two (known as the New Age Outlaws in the WWE) formed The James Gang and have gone against other tag teams, most notably The Latin American Exchange and Team 3D.