Wanyuudou

Wanyuudou is an older man who is one of three assistant of Enma Ai normally wearing a brown hat and old fashioned Japanese clothes. He tends to speak very politely but occasionally provides some comic relief to anime.

When going out to send someone to hell he takes the form of a burning wheel on the flying coach taking Enma and the other assistants to the location. During the first series of the anime he is main person who is turned into the doll and given to people as a contract for revenge.

Similarly to the other two assistants he infiltrates areas and investigates people when related to the revenge. As a kind old man he comfortably fits into many common roles without raising much suspicion.