3.彼得·佩蒂格鲁（160）

3. Peter Pettigrew

Peter Pettigrew, also known as Wormtail, is introduced as one of the former friends of Harry's father and a member of the Marauders. Initially described as a timid and rat-like character, he is revealed to have played a crucial and treacherous role in the downfall of Harry's parents by betraying them to Voldemort. His return to the story as the animagus form of Ron's pet rat, Scabbers, adds an element of intrigue and surprise. Pettigrew's character illustrates themes of cowardice and betrayal; his actions driven by self-preservation rather than loyalty create conflict and tension. As Harry, Ron, and Hermione uncover the truth about Pettigrew's betrayal, the complexities of loyalty and the consequences of choices become central themes. His eventual confrontation with Harry brings forth the significance of accountability and the weight of one's past actions. Ultimately, Pettigrew embodies the darker aspects of friendship and the potential for betrayal, contrasting sharply with the loyalty shown by other characters in the series.