On Monday, he addressed his screaming fans from the ring at an event.
"No WWE talent becomes a legend on their own," he said. "Every man's heart one day beats its final beat. His lungs breathe their final breath."
A man's spirit is immortalized by the memory of the people who honour him, he said.
"You, you, you," he said, pointing at people in the audience. "You are the legend makers of Ultimate Warrior."
He began his WWE career in 1987, and went on to defeat Hulk Hogan to become a WWE champion at WrestleMania VI in Toronto. It was his only championship, which he successfully defended for nine months.
He is survived by his wife and their two daughters.
The WWE released a statement saying it is "deeply saddened" to hear about the passing of "one of the most iconic WWE Superstars ever." The organization sent "its sincere condolences to Warrior’s family, friends and fans."