Leon Allen White, better known by his ring names Big Van Vader or simply Vader, was an American professional wrestler and professional football player. Throughout his career, he performed for New Japan Pro-Wrestling, World Championship Wrestling, the World Wrestling Federation, and All Japan Pro Wrestling during the 1990s and 2000s. White is widely regarded as one of the greatest super-heavyweight pro wrestlers of all time. White performed as a monstrous wrestler, and he was capable of aerial maneuvers: his diving moonsault was voted the "Best Wrestling Maneuver" of 1993 by Wrestling Observer Newsletter readers. Among other accolades in WCW and Japan, he won the IWGP Heavyweight Championship and the WCW World Heavyweight Championship three times each, the Triple Crown Heavyweight Championship twice, the WCW United States Heavyweight Championship once, and won the battle royal main event of the 1993 Battlebowl pay-per-view.

In the WCW and the World Wrestling Federation, he was billed as a super-heavyweight wrestler with a height of 6'4" and a weight of 450 pounds.