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 (NJPW), World Championship Wrestling (WCW), the World Wrestling Federation (WWF), All Japan Pro Wrestling (AJPW), and Pro Wrestling Noah (NOAH) during the 1990s and 2000s. He is widely regarded as one of the greatest super-heavyweight professional wrestlers of all time.

All Japan Pro Wrestling (AJPW/AJP) or simply All Japan is a Japanese professional wrestling promotion established on October 21, 1972, when Giant Baba split away from the Japanese Wrestling Association and created his own promotion. Many wrestlers had left with Baba, with many more joining the following year when JWA folded. From the mid-1970s, All Japan was firmly established as the largest promotion in Japan. As the 1990s began, aging stars gave way to a younger generation including Mitsuharu Misawa, "Dr. Death" Steve Williams, Kenta Kobashi, Gary Albright, Toshiaki Kawada, Mike Barton, Akira Taue and Jun Akiyama, leading to perhaps AJPW's most profitable period in the 1990s.