In this book, Faber is an old man who used to be an English professor at a college. Since people are no longer interested in books and such, he no longer has a job. We are not sure what he has done for a living.
Faber becomes a mentor to Montag, the hero of the book. Faber is the one who explains much of what is wrong with society to Montag -- he helps Montag understand what must be done in order for society to be restored to some more normal state.
Faber is a former college professor and Montag's ally throughout the novel. Montag remembers meeting Faber one day in the park and decides to visit him in order to get help comprehending various texts. During Montag's visit, Faber explains the importance of books and gives insight into why society has rejected novels. Faber also reluctantly agrees to help Montag challenge the authoritative government by giving him a two-way communication device called the green bullet. After Montag leaves Faber's home, Faber speaks to Montag via the green bullet and offers him encouragement and advice. Montag eventually kills Captain Beatty and stops at Faber's home before fleeing the city. Faber gives Montag directions to escape from the city and tells him about the traveling hobo intellectuals. Faber then gives Montag a change of clothes, and Montag successfully escapes to the countryside.
Faber is a "retired" college professor who helpes guy montag flee from the police and government.