Chuji is a character from the anime Shin Hakkenden who takes the form of a small dog, though his true nature is far more complex than a simple animal companion. He is a cyborg, created through the fusion of a living being and a robot. Originally, Chuji was a beloved pet named Chiyoji belonging to Queen Fuse. Following a great catastrophe that led to the near-collapse of the heavens, Chuji and a robot managed to escape. The combination of the dog and the machine resulted in his cybernetic form, which also granted him the ability to speak.

Chuji's primary motivation and most crucial role in the story revolve around his connection to a set of eight sacred jewels. He was entrusted with a specific mission to unite these jewels. To this end, Chuji himself carries one of the eight orbs, known as the Earth orb, which is embedded in his left canine tooth. His personal history is tied to a tragic loss of purpose, as the robot companion that held the mission details suffered a memory malfunction over time, causing Chuji to be revived or re-awakened late into the narrative.

In terms of personality, the available information highlights his loyalty, stemming from his origin as Queen Fuse's pet, and his determination to fulfill the quest of uniting the jewels despite the setbacks he faces. His key relationships include his bond with Queen Fuse, who originally gave him the jewel, and his partnership with the amnesiac robot, whose memory failure is a significant plot point affecting Chuji's own journey. While the series features other characters who possess the remaining orbs, Chuji's unique status as a talking animal and a cyborg sets him apart as one of the more distinctive links to the original source material. His abilities include speech, the inherent powers that come from possessing the Earth orb, and the physical attributes of his hybrid mechanical-biological body.