Kamajī is an elderly man with eight, long arms who operates the Boiler Room of the bathhouse. He appears as a spider (jap. Tsuchigumo) in the film Spirited Away directed by Hayao Miyazaki of Studio Ghibli.
His arms can apparently extend indefinitely, enabling him to access the upper cabinets of his workplace without having to leave his original work position. Kamajī appears to spend most of his time at his workplace, as he is seen sleeping and eating his meals there.
A number of Sootballs work for him by carrying coal into his furnace. He has large cabinets where he keeps all the herbs that are used in the baths.
After some persuasion, he allows Chihiro to work at the bathhouse and even pretends to be her grandfather when questioned by Lin, to protect her, though this ruse does not stand for long. The next morning, he awakes to find Chihiro asleep in the boiler room after her meeting with Haku. He says nothing and simply places a purple pillow on her sleeping form.
He later takes Haku, heavily injured into his boiler room and cares for him while Chihiro, given train tickets by Kamajī, journeys to Zeniba's cottage. At first he, seems cold and uncaring, but by the end of the film, he seems to have grown a soft spot for Chihiro and for anyone whom she calls her friend.