Squeler is the most prominent of the porkers. He is one of the three (along with Snowball and Napoleon) who take charge of organising the Rebellion. He is the most lively of the three, and when arguing a difficult point, he would skip from side to side, and whisk the tail about. This was very persuasive. He had very round cheeks, twinkling eyes, nimble movements, a shrill voice, and is a brilliant talker. Later on in the book, he becomes Napoleon's right hand man, but supports his decisions throughout the book. He is the pig who alters the Seven Commandments. Towards the end of the book, he is the first pig to walk out of the farmhouse on his hind legs. He becomes very stout by the end of the book.
His real-life Soviet counterpart is Vyacheslav Molotov, Josef Stalin's Prime Minister in the 1930s, who issued a lot of the death warrants during the Great Purge. Squealer is also a more general allegorical figure for propaganda. Stalin's propaganda team used language and images to keep the public calm and keep their control. Squealer's arguments even sound a little like those in Pravda, a daily paper that was the Soviet Party's official voice in the 1930s.