He also became general to Genghis Khan. Belgutei was considered a wise counselor and skilled diplomat, and was often used as a messenger by Genghis Khan. With Genghis Khan's blessing, Belgutei killed the champion wrestler of the Mongols, Buri Boko, by breaking his neck during a wrestling match.
He also attained prominence as Genghis Khan's top figurehead. Belgutei was perceived as a knowledgeable and skilled mediator, frequently employed as a messenger by Genghis Khan. With Genghis Khan's sanction, Belgutei murdered the Mongol wrestling champion, Buri Boko, by constricting him during a bout.