#2. Sheamus

Debuting in mid-2009 as a part of ECW, Sheamus O'Shaugnessy was exactly what the brand needed, a big man who could quickly rise.
After losing his surname and being drafted to RAW, Sheamus would defeat John Cena at the 2009 TLC Pay Per View, becoming the first Irish star to win the historic WWE Championship.
Cody Rhodes' uncle is a WWE Hall of Famer. More details HERE.
Losing the title at Elimination Chamber 2010, the Celtic Warrior's starting year would take a slump, losing to Triple H at WrestleMania 26, in, albeit, a high profile match.
After destroying the Game at Extreme Rules, he returned to the main event picture, and defeated Edge, Randy Orton and John Cena (again) to win the WWE Championship, at Fatal 4-Way.
The Irishman's success spreads to this day with multiple titles, including the United States Championship, with even more success as a Tag star, including winning the SmackDown Live Tag Team Championships with Cesaro on the blue brand's 1,00th episode.