Wormtail (Peter Pettigrew)

Wormtail, whose real name is Peter Pettigrew, is a fictional character from J.K. Rowling's "Harry Potter" series. He is a former friend of Harry Potter's father and a member of the Marauders, a group of young wizards. Wormtail is known for his cowardice and betrayal; he turns against his friends and aligns with the dark wizard Voldemort. He can transform into a rat, which symbolizes his treacherous nature. Despite being a minor character, his actions significantly impact the story, particularly through his role in Voldemort's return to power.