Moaning Myrtle is a ghost that lives on the 2nd floor girl's toilets at Hogwarts. She appeared for the first time in the Year Two trailer of Lego Harry Potter: Years 1-4. She died about 50 years before the Harry Potter series begins due to looking into the Basilisk's deadly gaze, in the time that Tom Riddle was not yet Lord Voldemort and he wrote in his diary.