Montag’s boss and the novel’s antagonist. As the fire chief, he defends the book-burning system despite his extensive knowledge of literature, using his rhetorical skills to manipulate and challenge Montag.

Montag’s wife, who spends her days absorbed in technology. She represents a society that values superficiality and is disconnected from reality, ultimately reporting Montag for possessing books.

A retired English teacher who becomes Montag’s mentor. Initially hesitant, he supports Montag’s quest for knowledge, helping him connect with literature through his understanding of its value.

Leader of the "Book People," a group of intellectuals. He becomes Montag’s mentor after Montag flees the city, teaching him techniques to preserve and pass on literary knowledge.

Montag’s 17-year-old neighbor, who prompts him to rethink his life and society. A curious and free-spirited individual who enjoys nature and meaningful conversations, serving as Montag’s initial catalyst for change.

Friends of Mildred who visit the Montags. They lead shallow lives dominated by technology and social conventions, reacting strongly when confronted with literature’s emotional depth.