The shapeshifter is a monster encountered during the Witch's Housequest and confined to the shed behind the house. During the battle, it changes among four forms and each must be defeated without retreating in order to retrieve the ball and complete the quest.
If a player flees during combat to heal or leave, they will have to restart the fight in the shapeshifter's first form.
The first form that the shapeshifter takes is a human form with red skin and a bald head. In this form, it wears a robe of Zamorak (top), and red pants.
The second form it takes is that of a giant spider.