Professional wrestling star The Ultimate Warrior has died at the age of 54, World Wrestling Entertainment Inc. said late on Tuesday, Reuters reported. "WWE is shocked and deeply saddened to learn of the passing of one of the most iconic WWE Superstars ever, The Ultimate Warrior," the company said on its website. Born James Hellwig, he began his WWE career in 1987 and became one of its biggest stars. He was added to the WWE's Hall of Fame on April 5. The cause of death was not immediately announced.