WWE legend Kevin Sullivan passed away recently, the promotion announced Friday on its website.

He was 74.

The WWE did not reveal a cause of death or further details.

“A unique and influential figure in sports-entertainment history, Sullivan found success both in the ring and behind the scenes with his penchant for far out ideas that pushed creative boundaries,” the WWE said.

Sullivan was often a heel and known for his rivalries with fan favorites like Dusty Rhodes, Hulk Hogan, Barry Windham and The Road Warriors, among others.

He worked as a booker for World Championship Wrestling (WCW) after retiring from the ring.

WWE legend Ric Flair called Sullivan “An All Time Great Athlete & Friend” in a post on X after the news of his passing.

“I Am So Saddened To Hear About Kevin Sullivan’s Passing,” he wrote. “Rest In Peace Kevin!”