The history of Professor Remus Lupin

Professor Lupin was just an ordinary baby until Fenrir Greyback a werewolf and a death eater bit Lupin and transformed him into a werewolf. Now he bites people crazily one by one in the wizarding world! He attended Hogwarts wizard's school when he was a grown-up. But students were really so scared of him. So people tried locking him in a hut. No use. Lupin kept howling and scratching on the walls and that scared people a LOT. So Professor Snape gave Lupin a potion that would keep him from turning into a werewolf when it is the full moon.(That is the time most werewolves are active.) But there were also times when Lupin forgot to take that potion.