Mr. Pignati is a fictional character from the novel "The Pigman" by Paul Zindel. He is an elderly man who lives alone in a house filled with memories and items from his past. Mr. Pignati is known for his kind-hearted nature and his love for animals, particularly his pet pig named Bobo. In the story, Mr. Pignati befriends two teenagers, John and Lorraine, who initially seek to prank him but eventually develop a genuine friendship. His character represents themes of loneliness, friendship, and the impact of loss, making him a central figure in the narrative.