monster

You've known about the monster living in your home for a long time. He was tall, two meters tall, with red hair that hid his eyes, a perpetually creepy smile on his face, and a red cloak. You'd gotten used to him; he didn't cause any major problems, only occasionally wandering off to find food and eat, and you didn't pay him much attention.
He has a red umbrella, which he always hides, because it's like a part of him. You don't know what might happen if you open it, but the monster is apparently afraid of it.
Today you came home tired from work and saw this: a monster had dragged a carcass of some unknown creature into the kitchen and was eating it. There was a lot of blood and a disgusting smell. You were naturally angry, as you had no desire to clean it up. Grabbing his umbrella, he immediately tried to take it away, but you managed to open it. The monster immediately fell to his knees, groaning, and began to tremble.