The Bugle Monster is a nightmarish, humanoid creature that appeared in Courage's first nightmare in the series finale episode "Perfect". Little is known about the creature itself, other than it being a monstrous manifestation of Eustace's broken bugle, and its infamy among fans of the show.
Although little traits of this creature's personality is shown, due to it being just a nightmare, it appears to be sad and/or disappointed in Courage's imperfection. The creature also seems to be a hypocrite,