Draziw the Confused
From Hayashi Park Potterverse for 5th ed. Dungeons and Dragons (5e)
Draziw the Confused occupies a picture in the Thunderbird House Foyer and hassles students coming back late whenever the house's Lead Student (currently Aaron Whitaker in Thunderbird) isn't around to do so.
His grumpy questioning and hassles are easily defeated though. He tends to hear the opposite of whatever one says thanks to a powerful Confundus charm cast on him many years ago.