Mr. and Mrs. Parsons live in the flat next door to Winston. Both are repugnant to Winston, representing the unthinking masses.
Mrs. Parson is tired, dirty and run over by her rotten, nasty children. She clearly has no life of her own.
Overweight and sweaty, Mr. Parsons swallows the Party lines whole. In addition to having to endure him as a neighbor, Winston has to work with the man. His unblinking acceptance of the Doctrine makes Winston think Parsons will never be vaporized. But he is surprised in the end to find him at the Ministry of Love, no poorer for having been denounced by his horrible children.