An oddly-coloured spider with three eyes upon its abdomen, which appears in the sunset world where Ai and her assistants reside between assignments. It speaks with the voice of a man and is apparently Ai's superior, having been the one to pronounce sentence on her after she killed the people of her village. It appears to be holding the souls of Ai's loved ones (her parents) as hostage. If Ai does not do the task she has been given, The Spider has threatened that her parents would wander in darkness for eternity. The Spider demonstrates an ability to pilot the ferryboat to Hell and tries to restrain Ai, having decided to take her to Hell after her feelings of rage reawakened and she violently attacked the Shibatas. Ai turned out to be too strong for it to hold her without her consent. The Spider is neither liked nor trusted by Ai's assistants, with whom it in turn does not speak. In the last episode of Futakomori, Wanyūdō identifies The Spider as the God of Hell. It can be inferred that The God of Hell deliberately exposed Ai to a situation reminiscent of her own death in order to test whether she would obey its will or act on her impulse to interfere with Takuma's plight. The God of Hell returns in season 3 to punish the newest Hell Girl, Yuzuki, after she breaks the rules and tries to send a grudge of her own to Hell. Ai then returns to save Yuzuki from being sent to Hell by The God of Hell, and she offers to replace Yuzuki as Hell Girl. The God of Hell accepts and restores Ai's position as Hell Girl.