A Japanese youkai, generally seeing wearing the clothing of the yamabushi - practitioners of Shugendou (tokin hat, yuigesa/pom-pommed sash, shakujou, etc). They are also seen wearing tengu-geta and wielding hauchiwa.
Usually they are depicted as a humanoid raven/crow (or a red-skinned human with wings and unusually long noses, as seen on tengu masks), though there are also those that look like white wolves. They are associated with conceitedness and trickery.