Scabbers is a RAT in the Potterverse, the fictional universe created by J.K. Rowling in her Harry Potter series. He is the pet of Ron Weasley, one of the main characters in the series, and is an important part of the story. Scabbers is a magical creature, capable of understanding human speech and performing basic tasks. He is also known for his loyalty to Ron, often helping him out of difficult situations.