#9 Umaga (Age: 36)
After starting off his career as part of various tag teams in the WWE, Eddie Fatu finally found his footing in the business with the Umaga character.
His new character brought him a new dimension as a Superstar, and he soon found himself on the top of the card with big names like John Cena. He was also the focal point of the WrestleMania face-off between Donald Trump and Vince McMahon, as he was the hand-picked representative of McMahon.
After that, however, Umaga was relegated to the Intercontinental title scene and he soon left the company. In 2009, Umaga was found dead and witnesses said they saw blood coming out of his nose, and the cause of death was later revealed to be a heart attack.
There were also subsequent revelations that Umaga violated many of the WWE talent wellness policies and was using several drugs, which eventually contributed to his death.