Richard Kuklinski committed crimes.
The International Military Tribunal for the Far East ( IMTFE ) , also known as the Tokyo Trials or the Tokyo War Crimes Tribunal , was convened on April 29 , 1946 , to try the leaders of the Empire of Japan for three categories of crimes . Richard Leonard Kuklinski ( April 11 , 1935 -- March 5 , 2006 ) was an American contract killer who was convicted for five murders . During his criminal career , fellow mobsters called Kuklinski `` the one-man army '' or `` the devil himself '' due to his fearsome reputation and imposing physique of 6 ' 5 '' ( 196 cm ) and 270 pounds ( 122 kg ) . By the early to mid-1980s , Kuklinski was involved in narcotics , pornography , arms dealing , money laundering , hijacking and contract killing on a global basis . While his range of criminal activities expanded , he began to make mistakes .