#2 Triple H never worked in ECW
Throughout his career, Triple H worked on both WWE's major brands: RAW and SmackDown. He has also appeared at most pay-per-views. But there remains one brand The King of The Kings never got to be a part of.
The name of the brand is Extreme Championship Wrestling. Better known as ECW. ECW was founded in 1992 inked a talent exchange deal with WWF/E a few years into its existence. During this time, stars from the two companies jumped ships and showcased their talents.
The Cerebral Assassin wanted to go to ECW and work on a few shows but backstage officials didn't agree to it. Due to this, he never worked in ECW while it was a separate company. He also surprisingly didn't get to work on it after WWE purchased the company and established it as their third major brand in 2006.
Big stars such as The Big Show, Rob Van Dam, Tommy Dreamer, and many others became a part of the brand. The closest The King of Kings got to stepping foot inside an ECW ring was when he and Shawn Michaels teamed up to fight the then-ECW Champion Big Show in a 2-on-1 handicap match.