What is the name of the prison guard protagonist in 'The Green Mile'?

The prison guard protagonist in The Green Mile is Paul Edgecombe. He supervises the death row block at Cold Mountain Penitentiary and narrates the novel from the perspective of his later life.

The main events take place in 1932, when Paul is about 40 years old and works alongside guards including Brutus Howell, Dean Stanton, and Harry Terwilliger. The death row corridor is nicknamed “the Green Mile” because of the green linoleum floor leading prisoners to the electric chair.

Paul's life changes when John Coffey arrives on the block. Coffey is a massive, gentle prisoner convicted of murdering two girls, yet Paul discovers that he possesses mysterious healing abilities. Percy Wetmore is another guard, but he is a sadistic and antagonistic colleague rather than the protagonist. The novel was first published as six serialized volumes in 1996 before appearing as a single book in 1997.