Narrator. They speak in the literary work.
Answer:
He uses Squealer's character to parody a naïve follower of a corrupt leader.
He uses reversal to show that dictators do not abide by their principles.
To be honest, i think social class isn't really a problem in the Tenth story.
The story indeed told a story about a man from a rich family married a girl from a poor family. But the story revolve more around the role of gender within relationship, even though it's an old school one
hope this helps