Tengu (天狗, "heavenly dogs") are a class of mythical creatures from the yōkai (monster-spirits) family, which appear in Japanese folklore, and are sometimes worshipped as Shinto kami, revered spirits or gods.
Although they take their name from a dog-like Chinese demon, Tiangou, the tengu were originally thought to be beast-men of the wilderness that take the forms of birds of prey, and they are traditionally depicted with both human and avian characteristics. Buddhism long held that the tengu were disruptive demons and harbingers of war. Their image gradually softened, however, into one of protective, if still dangerous, spirits of the mountains and forests.
In Dead or Alive and Ninja Gaiden, a small number of tengu have appeared, serving as a threat to the humans, fitting the image of the tengu of the old folklore rather than that of modern times, although one was depicted in a manner more befitting of modern folklore.
It is said that the tengu arrived from the Asian continent and had a drastic effect on the Japanese, acting as teachers in order to demonstrate various technologies. The technology that is the basis of the various martial arts is usually obtained through the tengu. However, the tengu did maintain a degree of secrecy. Living deep in the mountain forests, their magical technologies and knowledge became the basis of Japanese occultism. In addition, Tengu were also implied to have been at least somewhat involved during the Warring Periods of Japan.
In recent years the existence of the tengu are shrouded in mystery with contact between them and other beings becoming difficult due to their secrecy. Nowadays, it is rare to even see evidence of a tengu, let alone meet one.
Tengu have similar body structure to humans, but have highly notable differences. A tengu's skin tone may be dark, usually dark red, brown or even dark blue, but there are some tengu that have the same skin tone as the average Japanese population.
Their bodies are generally broad, and they possess great physical strength. Height-wise, a male tengu stands at an average of seven shaku (approximately seven feet); however, some have been claimed to stand at ten shaku. The tengu also possess very high and long noses, which are said to have healing properties when used in medicine. However, there are some tengu that lack these noses, like Nyotengu (although she does have some masks with the long noses, alluding to that aspect of tengu).
It is said that tengu wear wings on their backs as fashion statements, and this led to the belief that they used these wings to fly. As the tengu possess the same agility as the shinobi and as they have been sighted gracefully jumping from tree to tree in similar fashion while donning wings, it has been thought that they were capable of flight through them; however, this could just be a testament of their control over the mystical forces of the world.
The language they use is not that different to the language used in historical Japan. The everyday game of "Tengu Daoshi" reflects the strength of these beings. In this game, they knock over full-grown pine trees in the mountains. It seems like simple vandalism but apparently there’s a competitive side to the activity: The thicker the tree one can knock down, the more status one can earn. They are also known to drink alcoholic beverages. Tengu, similar to humans, are also divided into different tribes, with it being implied via Nyotengu that their tribes' identity lie in the color of their wings.
According to Nyotengu, the closest the tengu have to birthday celebrations are "special days", and they generally don't limit giving birthday cakes to one day in a year.
Based on comments made by both Nyotengu and Kanna, the tengu and oni (ogres in the English releases) have a rivalry with each other, with tengu in particular looking down on oni due to the latter party tending to flee from them.
Known Tengu in Dead or Alive
- Kuramasan Maouson, the deity of Kurama mountain and leader of tengu realm, killed by Bankotsubo.
- Bankotsubo, the final boss of DOA2, simply called "Tengu" in the game series. He is a tengu fugitive who murdered Kuramasan Maouson before escaping to the human world, where he unleashed chaos before being stopped by Ryu Hayabusa.
- Nyotengu, a princess of the tengu realm.