Peter Pettigrew, also known as Wormtail, is a character from the Harry Potter series created by J.K. Rowling. He is a former friend of Harry Potter's father, James Potter, and was a member of the Marauders, a group that included Sirius Black and Remus Lupin. Pettigrew is known for his cowardly nature and betrayal of his friends, which ultimately leads to the death of Lily and James Potter. In the series, Pettigrew serves as a servant to the dark wizard Lord Voldemort. He plays a crucial role in Voldemort's return to power and is responsible for revealing the Potters' location. His character embodies themes of betrayal and the consequences of choosing self-preservation over loyalty.