The Ultimate Warrior, the former WWE professional wrestling champion, has died at 54.

The Ultimate Warrior, whose real name is James Brian Hellwig, passed away days after being inducted into the WWE Hall of Fame. The cause of death is not known yet.

The news of his death was announced by WWE who stated: 

"WWE is shocked and deeply saddened to learn of the passing of one of the most iconic WWE superstars ever, The Ultimate Warrior."

The Ultimate Warrior changed his name from James Hellwig in 1993 after he began his career in wrestling in 1987. He won the world title wen he defeated Hulk Hogan at Wrestlemania VI.

The 54-year-old was inducted into the Hall of Fame on Saturday after an 18-year absence. In his speech, he had announced that he will sign a new multi-year deal with WWE as an official ambassador.

"No WWE talent becomes a legend on their own," he stated. "Every man's heart one day beats its final beat. His lungs breathe their final breath. And if what that man did in his life makes the blood pulse through the body of others and makes them bleed deeper in something that's larger than life, then his essence, his spirit, will be immortalized by the storytellers -- by the loyalty, by the memory of those who honor him, and make the running the man did live forever...You, you, you, you, you, are the legend-makers of Ultimate Warrior."

The Ultimate Warrior leaves behind his wife Dana, and their two daughters, Indiana Marin "Indy" Warrior, 14, and Mattigan Twain Warrior, 11.