North Polar Bear
From Tolkien Gateway
The North Polar Bear was a polar bear who lived with Father Christmas at the North Pole. He is especially noted for being "helpful" and for causing a lot of accidents.
Personality
Despite Polar Bear's proneness to accidents, he is noted as being "a nice old thing" by Father Christmas. Polar Bear also attributes his mistakes in spelling due to the fact that Artik is the language spoken at the North Pole, instead of English.