The Taotie, also known by its Japanese name Toutetsu, is said to be a Chinese monster of unknown origin. It is said that it is a greedy monster with an insatiable appetite, and as punishment, only its head remains. Fear of the monster led its image to be cast on Chinese bronzes and ritual vessels. Along with Taown, Hun Dun and Qiong Qi, it is one of the Four Fiends, prominent Chinese demons representing evil virtues. Tao Tie represents gluttony.
"Origin: China. One of the Si-xiong in parts of China. It has a sheep's head with a human torso, and is extremely greedy. It will do anything to steal treasure, but then never does anything with it. It's said that its appetites are as bottomless as a Preta's."
Tao Tie acted as the central character of the Year of the Sheep-themed New Year's event and gave the Do Demon Baasters Dream of Demon Sheep? quest. In game, he appears in the boss room of Shinagawa's Catacombs of the Templar Knight gold level instance in True Byakko's boss room.
"One of the Si-xiong of ancient China. It has a human face on a sheep-like body and sharp fangs. Its insatiable hunger causes it to eat until nothing remains."
—Shin Megami Tensei IV Apocalypse compendium
Taotie can be found in Tsukiji Konangji. It can teach Nanashi the Spirit Drain and Purple Smoke skills through its Demon Whisper. It benefits from learning Physical skills and possibly some elemental defense passive skills as well. Taotie will evolve into Taowu upon reaching level 62, provided that Nanashi can control the resulting demon.
A evil god kept sealed to be used by the Geirin Kuzunoha's in their Great Summoner's Hall, knowledge of him is kept secret in an ancient scripture guarded by the Geirins. During the Feudal states period he was used to devour the space between the Gate of the Abysmal Realm and the Pojitrawn. When they finally arrive at the end of the hall, Gouto is surprised by how nonthreatening he appears. Taotie informs him that he was one of the four ancient evils, but despite this speaks honorably of both Raidou and the deceased Geirin, who died before they could meet and proved he was worthy of his title as Geirin Kuzunoha.
At the end of chapter 6 he once again fulfills his role as he devours the space between the gate above the capital and the Tsukigata Village. He appears briefly in chapter 7 to see if Raidou was doing well after having so much MAG drained and was surprised by how quick he recovered. He then leaves for the Great Summoner's Hall after informing Raidou that he wouldn't mind joining him again just to taste his MAG.
"One of the Si-Xiong of ancient China. It has a human face on a sheep-like body and sharp fangs. Its insatiable hunger causes it to eat until nothing remains. It's said that it steals treasure from the weak while toadying up to the strong."