Howl's Moving Castle Calcifer Sticker features a Fire Demon, which is in a magical contract with Wizard Howl in Studio Ghibli's anime. He used to be a falling star, whom Howl was able to catch before he fell to earth and extinguished. He is a powerful creature with a great deal of magical ability, though he can't move beyond the confines of the hearth in which Howl keeps him without the wizard's help.