Tsuchioh was originally an animation test model for games I made and appeared as an alternative appearance for characters in many of my games. Since then they were a hit with fans and appeared in many fan works. Later along with their counterpart Mao-Mao they appeared in Pow Dark, a spin-off series of Albion and later as a canon character in the Albion series though this time without Mao. They are set to have a story arch alongside Mao soon which has had mixed response due to Mao's unpopularity.