Moony was the werewolf form of Remus John Lupin that appears in Harry Potter and the Prisoner of Azkaban.
Biography[]
Remus Lupin had been bitten by a werewolf as a child, and the lycanthrophy was taking effect when the full moon was out. He transformed into a werewolf known as Moony and approahced Harry and his friends, but was blocked by Snape. As he was about to attack, he was tackled by Sirius Black, who had turned into a dog. The two fought with each other and Sirius ran away, chased by Moony. Catching him, he threw him away but Harry hit him with a rock. The werewolf roared at Harry and ran to him but suddenly heard someone calling and decided to follow the sound and left.