A Bugbear supposedly appears on Tolkien's "The Hobbit": Beorn! Remember that dude that transforms into a bear and gives shelter to Gandalf, Bilbo and Thorin's Company? There you have it! Though I neeeeeeever thought he would look like the picture above. At least in my imagination, he was a little more humane-like. The word "Bugbear" is also used in our modern world as a metaphor for something that is annoying or irritating.