Fascism is a mass political movement that emphasizes extreme nationalism, militarism, and the supremacy of both the nation and the single, powerful leader over the individual citizen.
The three main dictators at the start of WW2 are Benito Mussolini, Adolf Hitler, and Hirohito of Imperial Japan.
The nations that made up the Axis Powers were Italy, Germany and Japan.
The nations that made up the Allied Powers were the United States, Great Britain, France, Soviet Union and, to a lesser extent, China.