Konishiki Yasokichi

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Konishiki was the heaviest wrestler ever to compete in sumo's top division, peaking at around 287 kg, and his nickname was the Dump Truck. Born Salevaa Atisanoe in Hawaii, of Samoan descent, he became in 1987 the first foreign-born wrestler to reach ozeki, sumo's second-highest rank. He went on to win three top-division championships but was never promoted to yokozuna: after his third title, in 1992, the decision went against him, amid a public row over whether a foreigner could be judged fairly.

This scan records 282.5 kg at 184 cm, close to that peak, with about 51% body fat. Even so, that leaves roughly 138 kg of fat-free mass, more than most heavyweight boxers weigh in total. In sumo, which has no weight classes and where a bout is often won by driving the opponent out of the ring, that sheer bulk was the weapon.