What is the author's style in Pale Fire by Vladimir Nabokov?

The first-person narrator of the commentary is Charles Kinbote, and he proves himself to be unreliable. The narrative reveals that Kinbote lives a complex fantasy existence where he believes himself to be the exiled king of Zembla. Because so much of Kinbote's narrative is a self-invented fiction, all of Kinbote's narration is called into question. The reality of the commentary is not an objective reality, but the reality that exists inside Charles Kinbote's head. As the narrative unfolds, Kinbote uses a third-person semi-omniscient narrative style to tell the stories of King Charles, giving the king's personal thoughts as well as private actions, leading the reader to believe that Kinbote actually is King Charles.