* "A Prayer for Owen Meany": Owen Meany, a small but influential character who profoundly affects the life of the narrator, John Wheelwright.
* "The World According to Garp": T.S. Garp, a writer and the main protagonist, who is known for his unconventional life and worldview.
* "The Cider House Rules": Homer Wells, an orphan raised in an orphanage, who becomes a skilled physician but struggles with ethical dilemmas.
* "The Hotel New Hampshire": The Berry family, a quirky and dysfunctional group who experience many adventures and challenges.
* "A Son of the Circus": "A Son of the Circus" is the title itself and refers to the protagonist, a young man named Eamon, born with dwarfism who is raised by a circus family.
* "The Fourth Hand": The title refers to a character named "The Fourth Hand," a disfigured man with a rare birth defect, who is deeply connected to the main protagonist, Miles, and his life.
These are just a few examples, and there are many more title characters in John Irving's novels.
If you have a specific book in mind, you can ask me about the title character from that particular novel!