Master Gregory is a character from the Harry Potter series, specifically featured in the Harry Potter and the Goblet of Fire. He is known for his role as a judge during the Triwizard Tournament, where he helps oversee the competition among the three wizarding schools: Hogwarts, Beauxbatons, and Durmstrang. In the story, Master Gregory is depicted as a fair and authoritative figure, ensuring that the tournament runs smoothly and that the rules are followed. His presence adds to the atmosphere of the magical event, highlighting the importance of tradition and honor in the wizarding world.