A young boy who is a dragon in the guise of a human, who helps Chihiro after her parents have transformed into pigs. Haku works as Yubaba's direct subordinate, often running errands and performing various missions for her. He has the ability to fly in his true form, which is a dragon. Over the course of the movie his relationship with Chihiro becomes stronger, especially after she learns he is a dragon. This bond eventually leads to them falling in love, for it was their love for each other that broke Yubaba's spell on Haku. Haku was originally the spirit of the Kohaku River and knows Chihiro because he once saved her from drowning. When the river was destroyed and filled in with apartments, he no longer had a home and went to the spirit world, where he became Yubaba's apprentice. Toward the end of the story Chihiro recalls her memory of falling into the Kohaku river, of which Haku was the spirit; she thus frees him from Yubaba's service by helping him remember his real name and past, which he had forgotten due to the name change and the curse which Yubaba has placed on him. When Yubaba is nearby, Haku is as sharp-voiced and stern to Chihiro as to anyone else.