Jido is a middle aged man and Ted's bookkeeper who helps Ted's find Cherish by both of them traveling on his motorcycle. He and Ted been traveling the world and not have yet to find her whenever they go and live in a town. It is shown that while they in Japan he and Ted seem to be always traveling and fighting Mamodo and making hard to trust to other Mamodo, but when they meet Zatch and Kiyo, it is shown that they have their share of Mamodo, choose to fight if necessary, and become friends. In the manga, after Ted's book is burned, he continues to help Zatch by tying up Lupa and making them help Zatch. It is unknown rarely if he still traveling the world, but it is shown that Ted gives a letter along with postcard to him showing what happens in the Mamodo world.