Heen is an odd dog who follows Sophie around. He is Madame Sullimanrsquos errand dog. He is introduced when Howl asks Sophie to go to the Royal Castle as quotMrs. Pendragonquot while Howl follows behind disguised and tell Madame Suliman that Howl is cowardly and of no use. As Sophie is going to the Royal Castle she is wondering what Howl disguised himself as. Right after an old dog begins to follow her and she thinks it is Howl. Heen is on the large side old and wheezes a lot and leaves the castle with Howl Sophie and the Witch of the Waste. One would say he becomes their pet.