Napoleon

Josef Stalin, the pig who leads the rebellion and eventually becomes the dictator of Animal Farm, is a clear representation of Stalin.

Squealer and Minimus-

Propaganda because of his manipulation, and poems and songs from Minimus

Mr. Jones

Tsar Nicholas II whose reign was marked by incompetence, cruelty, and a disregard for the well-being of his people

Mr. Whymper

Soviet Union, a solicitor (lawyer) whom Napoleon hires to represent Animal Farm to the outside world, symbolizing the capitalist world that profited from the Soviet Union, and he is portrayed as shrewd and calculating. Representing capitalists who did business with the USSR

Mollie-

The Bourgeois Middle Class, enjoyed the luxuries in life and often weren't willing to give them up to join the fight.

Moses

The Russian Orthodox Church, Prior to the Revolution, the church had a close relationship with the Russian monarchy, just as Moses has a close relationship with Mr. Jones. Sugar-candy Mountain represents heaven. 

Snowball-

Leon Trotsky, the pig, is a leader of the rebellion. Trotsky is depicted as an intellectual, charismatic leader who initially plays a key role in the revolution but is later ousted and vilified by Stalin. 

Boxer

 The Peasant Workers of Russia

Benjamin-

 Intellectuals who did not push back against communism and Stalin

Mr. Pilington of Foxwood Farm

British ruling class and the capitalist governments of England and the United States. He is an easygoing gentleman farmer who engages in negotiations.

Mr. Frederick of Pinchfield Farm

 Adolf Hitler and Nazi Germany, attack the farm and has cruel conditions within their land. 

Clover

Female working class

Muriel

- Educated working class

Dogs

- KGB police